Ubuntu MX records
I am little confused about MX records.
At least I think that is the problem, I followed a lot of guides about how to setup postfix, postfixadmin, dovecot on my VPS with Ubuntu 16.04,
but I had no luck so far. It seems like everything is OK, but I can't send or receive any emails.
Also I can't connect with Thunderbird or any other email client to my server, probably because they can't find it. Below are some screenshots of my noip MX record, dig command results and /etc/host file on my VPS.
noip MX records
dig results
/etc/hosts file
networking dns postfix dovecot
edited Feb 12 at 1:02
Sergiy Kolodyazhnyy
74.1k9155324
asked Feb 11 at 10:55
TolisTolis
6
add a comment |
I am little confused about MX records.
At least I think that is the problem, I followed a lot of guides about how to setup postfix, postfixadmin, dovecot on my VPS with Ubuntu 16.04,
but I had no luck so far. It seems like everything is OK, but I can't send or receive any emails.
Also I can't connect with Thunderbird or any other email client to my server, probably because they can't find it. Below are some screenshots of my noip MX record, dig command results and /etc/host file on my VPS.
noip MX records
dig results
/etc/hosts file
networking dns postfix dovecot
edited Feb 12 at 1:02
Sergiy Kolodyazhnyy
74.1k9155324
asked Feb 11 at 10:55
TolisTolis
6
2
Two of your pictures were only of text. Please edit your question and add the text to your question. It's far easier to read, and we can cut/paste in replies to you.
– guiverc
Feb 11 at 11:18
Try specifying the record type explicitly :dig net4u.ddns.net MX. That however will use the specified system nameserver, to which your records may not have propagated yet. Can't suggest much else beyond that
– Sergiy Kolodyazhnyy
Feb 12 at 1:00
Thanks you are right the Dig MX shows: net4u.ddns.net. 0 IN A 185.52.3.242 net4u.ddns.net. 0 IN MX 5 mail.net4u.ddns.net.
– Tolis
Feb 12 at 8:38
add a comment |
I am little confused about MX records.
At least I think that is the problem, I followed a lot of guides about how to setup postfix, postfixadmin, dovecot on my VPS with Ubuntu 16.04,
but I had no luck so far. It seems like everything is OK, but I can't send or receive any emails.
Also I can't connect with Thunderbird or any other email client to my server, probably because they can't find it. Below are some screenshots of my noip MX record, dig command results and /etc/host file on my VPS.
noip MX records
dig results
/etc/hosts file
networking dns postfix dovecot
edited Feb 12 at 1:02
Sergiy Kolodyazhnyy
74.1k9155324
asked Feb 11 at 10:55
TolisTolis
6
I am little confused about MX records.
At least I think that is the problem, I followed a lot of guides about how to setup postfix, postfixadmin, dovecot on my VPS with Ubuntu 16.04,
but I had no luck so far. It seems like everything is OK, but I can't send or receive any emails.
Also I can't connect with Thunderbird or any other email client to my server, probably because they can't find it. Below are some screenshots of my noip MX record, dig command results and /etc/host file on my VPS.
noip MX records
dig results
/etc/hosts file
networking dns postfix dovecot
networking dns postfix dovecot
edited Feb 12 at 1:02
Sergiy Kolodyazhnyy
74.1k9155324
asked Feb 11 at 10:55
TolisTolis
6
edited Feb 12 at 1:02
Sergiy Kolodyazhnyy
74.1k9155324
asked Feb 11 at 10:55
TolisTolis
6
edited Feb 12 at 1:02
Sergiy Kolodyazhnyy
74.1k9155324
edited Feb 12 at 1:02
Sergiy Kolodyazhnyy
74.1k9155324
edited Feb 12 at 1:02
Sergiy Kolodyazhnyy
74.1k9155324
74.1k9155324
asked Feb 11 at 10:55
TolisTolis
6
asked Feb 11 at 10:55
TolisTolis
6
asked Feb 11 at 10:55
TolisTolis
6
6
2
Two of your pictures were only of text. Please edit your question and add the text to your question. It's far easier to read, and we can cut/paste in replies to you.
– guiverc
Feb 11 at 11:18
Try specifying the record type explicitly :dig net4u.ddns.net MX. That however will use the specified system nameserver, to which your records may not have propagated yet. Can't suggest much else beyond that
– Sergiy Kolodyazhnyy
Feb 12 at 1:00
Thanks you are right the Dig MX shows: net4u.ddns.net. 0 IN A 185.52.3.242 net4u.ddns.net. 0 IN MX 5 mail.net4u.ddns.net.
– Tolis
Feb 12 at 8:38
add a comment |
2
Two of your pictures were only of text. Please edit your question and add the text to your question. It's far easier to read, and we can cut/paste in replies to you.
– guiverc
Feb 11 at 11:18
Try specifying the record type explicitly :dig net4u.ddns.net MX. That however will use the specified system nameserver, to which your records may not have propagated yet. Can't suggest much else beyond that
– Sergiy Kolodyazhnyy
Feb 12 at 1:00
Thanks you are right the Dig MX shows: net4u.ddns.net. 0 IN A 185.52.3.242 net4u.ddns.net. 0 IN MX 5 mail.net4u.ddns.net.
– Tolis
Feb 12 at 8:38
2
2
Two of your pictures were only of text. Please edit your question and add the text to your question. It's far easier to read, and we can cut/paste in replies to you.
– guiverc
Feb 11 at 11:18
Two of your pictures were only of text. Please edit your question and add the text to your question. It's far easier to read, and we can cut/paste in replies to you.
– guiverc
Feb 11 at 11:18
Try specifying the record type explicitly :
dig net4u.ddns.net MX. That however will use the specified system nameserver, to which your records may not have propagated yet. Can't suggest much else beyond that– Sergiy Kolodyazhnyy
Feb 12 at 1:00
Try specifying the record type explicitly :
dig net4u.ddns.net MX. That however will use the specified system nameserver, to which your records may not have propagated yet. Can't suggest much else beyond that– Sergiy Kolodyazhnyy
Feb 12 at 1:00
Thanks you are right the Dig MX shows: net4u.ddns.net. 0 IN A 185.52.3.242 net4u.ddns.net. 0 IN MX 5 mail.net4u.ddns.net.
– Tolis
Feb 12 at 8:38
Thanks you are right the Dig MX shows: net4u.ddns.net. 0 IN A 185.52.3.242 net4u.ddns.net. 0 IN MX 5 mail.net4u.ddns.net.
– Tolis
Feb 12 at 8:38
add a comment |
1 Answer
1
active
oldest
votes
It's been a very long time since I have setup email servers. That was back in the day when we did not have the luxury of apt and such. Now getting down to your issue.
First thing is we need to know what you are trying to do. Are you setting up a email server so that you can send / recv email or are you just trying to get one of your php scripts to send an email to you.
1) The first thing is I don't think anything should be in your hosts file. Back up your hosts file and return it to the default. Actually your are better off just commenting out everything that was added. I have a running postfix on my box right now and I don't have any of those lines in my hosts file.
2) Check your local ports. nmap 127.0.0.1 should show smtp.
3) There should not be any reason for all 3 aliases. Also the screenshot you have I am not sure what it is asking for. It says "hostname" not "FQDN". So is it supposed to be just the hostname ??
4) Your dig shows "IN A". That is an address record NOT a MX record. Your commands should be either dig mx net4u.ddns.net or dig any net4u.ddns.net
5) Read the "MX Records" section VERY carefully. It states "EXTERNAL" mail exchanger. DDNS does not usually allow people to run internal mail servers. YOU would have to check with noip to find out what they allow and don't allow. I just spent an hour trying to add a mx to my afraid.org DDNS account and could not do it. So you may not be able to do what you want.
answered Feb 12 at 4:37
dewddewd
277
First of all thank you for you answer. I am trying to send and receive email just for learning purposes. You are right about the hosts file it has so many unnecessary records, i was't sure what's the correct so i added all of them. the nmap show's: 25/tcp open smtp Dig any: net4u.ddns.net. IN ANY net4u.ddns.net. 0 IN A 185.52.3.242 net4u.ddns.net. 0 IN MX 5 mail.net4u.ddns.net. I will check with NOIP about if they allow that and check more thoroughly the MX section, thank you again.
– Tolis
Feb 12 at 8:35
Yeah, that looks a whole lot better. However, from what I can see from your dig output. You need to have a A record for mail.net4u.ddns.net. It should read something like this:net4u.ddns.net 0 IN A 185.52.3.242 >>> mail.net4u.ddns.net 0 IN A 185.52.3.242 >>> net4u.ddns.net 0 IN MX 10 mail.net4u.ddns.net
– dewd
Feb 12 at 13:42
The '>>>' are there only to indicate line breaks.
– dewd
Feb 12 at 13:46
IF you are trying to setup a test email server then I would do it ONLY as a internal test box. So I would get rid of the noip.com stuff and use your email program (Thunderbird) with incoming set to 127.0.0.1 and outgoing as 127.0.0.1. Setting up a email server is dangerous work and if done wrong can get you in a lot of trouble.
– dewd
Feb 12 at 13:55
They can get you into so much trouble I would advise as NOT doing it. However at the same time I can appreciate the approach of setting one up as a learning / educational tool. Meaning you will never learn how to do it until you do it. A incorrectly configured email server can be used to send mail without your knowledge. All of this is probably getting beyond the scope of this post.
– dewd
Feb 12 at 14:16
add a comment |
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "89"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1117336%2fubuntu-mx-records%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
It's been a very long time since I have setup email servers. That was back in the day when we did not have the luxury of apt and such. Now getting down to your issue.
First thing is we need to know what you are trying to do. Are you setting up a email server so that you can send / recv email or are you just trying to get one of your php scripts to send an email to you.
1) The first thing is I don't think anything should be in your hosts file. Back up your hosts file and return it to the default. Actually your are better off just commenting out everything that was added. I have a running postfix on my box right now and I don't have any of those lines in my hosts file.
2) Check your local ports. nmap 127.0.0.1 should show smtp.
3) There should not be any reason for all 3 aliases. Also the screenshot you have I am not sure what it is asking for. It says "hostname" not "FQDN". So is it supposed to be just the hostname ??
4) Your dig shows "IN A". That is an address record NOT a MX record. Your commands should be either dig mx net4u.ddns.net or dig any net4u.ddns.net
5) Read the "MX Records" section VERY carefully. It states "EXTERNAL" mail exchanger. DDNS does not usually allow people to run internal mail servers. YOU would have to check with noip to find out what they allow and don't allow. I just spent an hour trying to add a mx to my afraid.org DDNS account and could not do it. So you may not be able to do what you want.
answered Feb 12 at 4:37
dewddewd
277
First of all thank you for you answer. I am trying to send and receive email just for learning purposes. You are right about the hosts file it has so many unnecessary records, i was't sure what's the correct so i added all of them. the nmap show's: 25/tcp open smtp Dig any: net4u.ddns.net. IN ANY net4u.ddns.net. 0 IN A 185.52.3.242 net4u.ddns.net. 0 IN MX 5 mail.net4u.ddns.net. I will check with NOIP about if they allow that and check more thoroughly the MX section, thank you again.
– Tolis
Feb 12 at 8:35
Yeah, that looks a whole lot better. However, from what I can see from your dig output. You need to have a A record for mail.net4u.ddns.net. It should read something like this:net4u.ddns.net 0 IN A 185.52.3.242 >>> mail.net4u.ddns.net 0 IN A 185.52.3.242 >>> net4u.ddns.net 0 IN MX 10 mail.net4u.ddns.net
– dewd
Feb 12 at 13:42
The '>>>' are there only to indicate line breaks.
– dewd
Feb 12 at 13:46
IF you are trying to setup a test email server then I would do it ONLY as a internal test box. So I would get rid of the noip.com stuff and use your email program (Thunderbird) with incoming set to 127.0.0.1 and outgoing as 127.0.0.1. Setting up a email server is dangerous work and if done wrong can get you in a lot of trouble.
– dewd
Feb 12 at 13:55
They can get you into so much trouble I would advise as NOT doing it. However at the same time I can appreciate the approach of setting one up as a learning / educational tool. Meaning you will never learn how to do it until you do it. A incorrectly configured email server can be used to send mail without your knowledge. All of this is probably getting beyond the scope of this post.
– dewd
Feb 12 at 14:16
add a comment |
It's been a very long time since I have setup email servers. That was back in the day when we did not have the luxury of apt and such. Now getting down to your issue.
First thing is we need to know what you are trying to do. Are you setting up a email server so that you can send / recv email or are you just trying to get one of your php scripts to send an email to you.
1) The first thing is I don't think anything should be in your hosts file. Back up your hosts file and return it to the default. Actually your are better off just commenting out everything that was added. I have a running postfix on my box right now and I don't have any of those lines in my hosts file.
2) Check your local ports. nmap 127.0.0.1 should show smtp.
3) There should not be any reason for all 3 aliases. Also the screenshot you have I am not sure what it is asking for. It says "hostname" not "FQDN". So is it supposed to be just the hostname ??
4) Your dig shows "IN A". That is an address record NOT a MX record. Your commands should be either dig mx net4u.ddns.net or dig any net4u.ddns.net
5) Read the "MX Records" section VERY carefully. It states "EXTERNAL" mail exchanger. DDNS does not usually allow people to run internal mail servers. YOU would have to check with noip to find out what they allow and don't allow. I just spent an hour trying to add a mx to my afraid.org DDNS account and could not do it. So you may not be able to do what you want.
answered Feb 12 at 4:37
dewddewd
277
First of all thank you for you answer. I am trying to send and receive email just for learning purposes. You are right about the hosts file it has so many unnecessary records, i was't sure what's the correct so i added all of them. the nmap show's: 25/tcp open smtp Dig any: net4u.ddns.net. IN ANY net4u.ddns.net. 0 IN A 185.52.3.242 net4u.ddns.net. 0 IN MX 5 mail.net4u.ddns.net. I will check with NOIP about if they allow that and check more thoroughly the MX section, thank you again.
– Tolis
Feb 12 at 8:35
Yeah, that looks a whole lot better. However, from what I can see from your dig output. You need to have a A record for mail.net4u.ddns.net. It should read something like this:net4u.ddns.net 0 IN A 185.52.3.242 >>> mail.net4u.ddns.net 0 IN A 185.52.3.242 >>> net4u.ddns.net 0 IN MX 10 mail.net4u.ddns.net
– dewd
Feb 12 at 13:42
The '>>>' are there only to indicate line breaks.
– dewd
Feb 12 at 13:46
IF you are trying to setup a test email server then I would do it ONLY as a internal test box. So I would get rid of the noip.com stuff and use your email program (Thunderbird) with incoming set to 127.0.0.1 and outgoing as 127.0.0.1. Setting up a email server is dangerous work and if done wrong can get you in a lot of trouble.
– dewd
Feb 12 at 13:55
They can get you into so much trouble I would advise as NOT doing it. However at the same time I can appreciate the approach of setting one up as a learning / educational tool. Meaning you will never learn how to do it until you do it. A incorrectly configured email server can be used to send mail without your knowledge. All of this is probably getting beyond the scope of this post.
– dewd
Feb 12 at 14:16
add a comment |
It's been a very long time since I have setup email servers. That was back in the day when we did not have the luxury of apt and such. Now getting down to your issue.
First thing is we need to know what you are trying to do. Are you setting up a email server so that you can send / recv email or are you just trying to get one of your php scripts to send an email to you.
1) The first thing is I don't think anything should be in your hosts file. Back up your hosts file and return it to the default. Actually your are better off just commenting out everything that was added. I have a running postfix on my box right now and I don't have any of those lines in my hosts file.
2) Check your local ports. nmap 127.0.0.1 should show smtp.
3) There should not be any reason for all 3 aliases. Also the screenshot you have I am not sure what it is asking for. It says "hostname" not "FQDN". So is it supposed to be just the hostname ??
4) Your dig shows "IN A". That is an address record NOT a MX record. Your commands should be either dig mx net4u.ddns.net or dig any net4u.ddns.net
5) Read the "MX Records" section VERY carefully. It states "EXTERNAL" mail exchanger. DDNS does not usually allow people to run internal mail servers. YOU would have to check with noip to find out what they allow and don't allow. I just spent an hour trying to add a mx to my afraid.org DDNS account and could not do it. So you may not be able to do what you want.
answered Feb 12 at 4:37
dewddewd
277
It's been a very long time since I have setup email servers. That was back in the day when we did not have the luxury of apt and such. Now getting down to your issue.
First thing is we need to know what you are trying to do. Are you setting up a email server so that you can send / recv email or are you just trying to get one of your php scripts to send an email to you.
1) The first thing is I don't think anything should be in your hosts file. Back up your hosts file and return it to the default. Actually your are better off just commenting out everything that was added. I have a running postfix on my box right now and I don't have any of those lines in my hosts file.
2) Check your local ports. nmap 127.0.0.1 should show smtp.
3) There should not be any reason for all 3 aliases. Also the screenshot you have I am not sure what it is asking for. It says "hostname" not "FQDN". So is it supposed to be just the hostname ??
4) Your dig shows "IN A". That is an address record NOT a MX record. Your commands should be either dig mx net4u.ddns.net or dig any net4u.ddns.net
5) Read the "MX Records" section VERY carefully. It states "EXTERNAL" mail exchanger. DDNS does not usually allow people to run internal mail servers. YOU would have to check with noip to find out what they allow and don't allow. I just spent an hour trying to add a mx to my afraid.org DDNS account and could not do it. So you may not be able to do what you want.
answered Feb 12 at 4:37
dewddewd
277
answered Feb 12 at 4:37
dewddewd
277
answered Feb 12 at 4:37
dewddewd
277
answered Feb 12 at 4:37
dewddewd
277
277
First of all thank you for you answer. I am trying to send and receive email just for learning purposes. You are right about the hosts file it has so many unnecessary records, i was't sure what's the correct so i added all of them. the nmap show's: 25/tcp open smtp Dig any: net4u.ddns.net. IN ANY net4u.ddns.net. 0 IN A 185.52.3.242 net4u.ddns.net. 0 IN MX 5 mail.net4u.ddns.net. I will check with NOIP about if they allow that and check more thoroughly the MX section, thank you again.
– Tolis
Feb 12 at 8:35
Yeah, that looks a whole lot better. However, from what I can see from your dig output. You need to have a A record for mail.net4u.ddns.net. It should read something like this:net4u.ddns.net 0 IN A 185.52.3.242 >>> mail.net4u.ddns.net 0 IN A 185.52.3.242 >>> net4u.ddns.net 0 IN MX 10 mail.net4u.ddns.net
– dewd
Feb 12 at 13:42
The '>>>' are there only to indicate line breaks.
– dewd
Feb 12 at 13:46
IF you are trying to setup a test email server then I would do it ONLY as a internal test box. So I would get rid of the noip.com stuff and use your email program (Thunderbird) with incoming set to 127.0.0.1 and outgoing as 127.0.0.1. Setting up a email server is dangerous work and if done wrong can get you in a lot of trouble.
– dewd
Feb 12 at 13:55
They can get you into so much trouble I would advise as NOT doing it. However at the same time I can appreciate the approach of setting one up as a learning / educational tool. Meaning you will never learn how to do it until you do it. A incorrectly configured email server can be used to send mail without your knowledge. All of this is probably getting beyond the scope of this post.
– dewd
Feb 12 at 14:16
add a comment |
First of all thank you for you answer. I am trying to send and receive email just for learning purposes. You are right about the hosts file it has so many unnecessary records, i was't sure what's the correct so i added all of them. the nmap show's: 25/tcp open smtp Dig any: net4u.ddns.net. IN ANY net4u.ddns.net. 0 IN A 185.52.3.242 net4u.ddns.net. 0 IN MX 5 mail.net4u.ddns.net. I will check with NOIP about if they allow that and check more thoroughly the MX section, thank you again.
– Tolis
Feb 12 at 8:35
Yeah, that looks a whole lot better. However, from what I can see from your dig output. You need to have a A record for mail.net4u.ddns.net. It should read something like this:net4u.ddns.net 0 IN A 185.52.3.242 >>> mail.net4u.ddns.net 0 IN A 185.52.3.242 >>> net4u.ddns.net 0 IN MX 10 mail.net4u.ddns.net
– dewd
Feb 12 at 13:42
The '>>>' are there only to indicate line breaks.
– dewd
Feb 12 at 13:46
IF you are trying to setup a test email server then I would do it ONLY as a internal test box. So I would get rid of the noip.com stuff and use your email program (Thunderbird) with incoming set to 127.0.0.1 and outgoing as 127.0.0.1. Setting up a email server is dangerous work and if done wrong can get you in a lot of trouble.
– dewd
Feb 12 at 13:55
They can get you into so much trouble I would advise as NOT doing it. However at the same time I can appreciate the approach of setting one up as a learning / educational tool. Meaning you will never learn how to do it until you do it. A incorrectly configured email server can be used to send mail without your knowledge. All of this is probably getting beyond the scope of this post.
– dewd
Feb 12 at 14:16
First of all thank you for you answer. I am trying to send and receive email just for learning purposes. You are right about the hosts file it has so many unnecessary records, i was't sure what's the correct so i added all of them. the nmap show's: 25/tcp open smtp Dig any: net4u.ddns.net. IN ANY net4u.ddns.net. 0 IN A 185.52.3.242 net4u.ddns.net. 0 IN MX 5 mail.net4u.ddns.net. I will check with NOIP about if they allow that and check more thoroughly the MX section, thank you again.
– Tolis
Feb 12 at 8:35
First of all thank you for you answer. I am trying to send and receive email just for learning purposes. You are right about the hosts file it has so many unnecessary records, i was't sure what's the correct so i added all of them. the nmap show's: 25/tcp open smtp Dig any: net4u.ddns.net. IN ANY net4u.ddns.net. 0 IN A 185.52.3.242 net4u.ddns.net. 0 IN MX 5 mail.net4u.ddns.net. I will check with NOIP about if they allow that and check more thoroughly the MX section, thank you again.
– Tolis
Feb 12 at 8:35
Yeah, that looks a whole lot better. However, from what I can see from your dig output. You need to have a A record for mail.net4u.ddns.net. It should read something like this:
net4u.ddns.net 0 IN A 185.52.3.242 >>> mail.net4u.ddns.net 0 IN A 185.52.3.242 >>> net4u.ddns.net 0 IN MX 10 mail.net4u.ddns.net– dewd
Feb 12 at 13:42
Yeah, that looks a whole lot better. However, from what I can see from your dig output. You need to have a A record for mail.net4u.ddns.net. It should read something like this:
net4u.ddns.net 0 IN A 185.52.3.242 >>> mail.net4u.ddns.net 0 IN A 185.52.3.242 >>> net4u.ddns.net 0 IN MX 10 mail.net4u.ddns.net– dewd
Feb 12 at 13:42
The '>>>' are there only to indicate line breaks.
– dewd
Feb 12 at 13:46
The '>>>' are there only to indicate line breaks.
– dewd
Feb 12 at 13:46
IF you are trying to setup a test email server then I would do it ONLY as a internal test box. So I would get rid of the noip.com stuff and use your email program (Thunderbird) with incoming set to 127.0.0.1 and outgoing as 127.0.0.1. Setting up a email server is dangerous work and if done wrong can get you in a lot of trouble.
– dewd
Feb 12 at 13:55
IF you are trying to setup a test email server then I would do it ONLY as a internal test box. So I would get rid of the noip.com stuff and use your email program (Thunderbird) with incoming set to 127.0.0.1 and outgoing as 127.0.0.1. Setting up a email server is dangerous work and if done wrong can get you in a lot of trouble.
– dewd
Feb 12 at 13:55
They can get you into so much trouble I would advise as NOT doing it. However at the same time I can appreciate the approach of setting one up as a learning / educational tool. Meaning you will never learn how to do it until you do it. A incorrectly configured email server can be used to send mail without your knowledge. All of this is probably getting beyond the scope of this post.
– dewd
Feb 12 at 14:16
They can get you into so much trouble I would advise as NOT doing it. However at the same time I can appreciate the approach of setting one up as a learning / educational tool. Meaning you will never learn how to do it until you do it. A incorrectly configured email server can be used to send mail without your knowledge. All of this is probably getting beyond the scope of this post.
– dewd
Feb 12 at 14:16
add a comment |
Thanks for contributing an answer to Ask Ubuntu!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1117336%2fubuntu-mx-records%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
2
Two of your pictures were only of text. Please edit your question and add the text to your question. It's far easier to read, and we can cut/paste in replies to you.
– guiverc
Feb 11 at 11:18
Try specifying the record type explicitly :
dig net4u.ddns.net MX. That however will use the specified system nameserver, to which your records may not have propagated yet. Can't suggest much else beyond that– Sergiy Kolodyazhnyy
Feb 12 at 1:00
Thanks you are right the Dig MX shows: net4u.ddns.net. 0 IN A 185.52.3.242 net4u.ddns.net. 0 IN MX 5 mail.net4u.ddns.net.
– Tolis
Feb 12 at 8:38