1.3.0 - External mail server loop

**nextone** · Aug 3rd 2016

Dear developers of I-MSCP,

at first of all, thanks for your great work with I-MSCP. It is an amazing solution and thanks Nuxwin for your engagement.

I updated my I-MSCP from 1.2.17 to 1.3.0 yesterday. Everything works fine, except of the external mail server rewrite. I have an email e.g. mail@alpha.com with is a rediction e.g. mail@beta.com. The website with beta.com is hosted at the same server with I-MSCP. I have activated the external mail server function of beta.com (later in addition added the MX DNS records in I-MSCP without change of behaviors). If someone send an email to mail@alpha.com, the server should redirect it to external hosted mail@beta.com, but I get a loop back.

Code

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
The mail system
<mail@beta.com> (expanded from <mail@alpha.com>): mail for
mediee.com loops back to myself
Final-Recipient: rfc822; mail@beta.com
Original-Recipient: rfc822;mail@alpha.com
Action: failed
Status: 5.4.6
Diagnostic-Code: X-Postfix; mail for mediee.com loops back to myself

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I looked for the issue in your source code, but have not found the bug. Can anyone help me, please?

Thanks,
Jan

**nextone** · Aug 9th 2016

Can nobody helps me with my issue?

**Nuxwin** · Aug 9th 2016

@nextone

Without the mail logs, we cannot really help you. Thus please do the following:

Code

# tail -fn0 /var/log/mail.log

then, send the mail (as previously done) and give us the output.

**nextone** · Aug 9th 2016

Thanks for your reply, Nuxwin. In the following the log. I hope this helps to investigate the problem:

Code

Aug 9 22:56:31 master postfix/smtpd[28590]: connect from mail-wm0-f41.google.com[74.125.82.41]
Aug 9 22:56:32 master postfix/smtpd[28590]: 167AB5EDC6: client=mail-wm0-f41.google.com[74.125.82.41]
Aug 9 22:56:32 master postfix/cleanup[28595]: 167AB5EDC6: message-id=<CAEFEUhY=7nVYKE4DZ2=rHxxskwepdx81T22JjPvDNjKssd8V1A@mail.gmail.com>
Aug 9 22:56:32 master postfix/qmgr[21315]: 167AB5EDC6: from=<mail@gmail.com>, size=4431, nrcpt=2 (queue active)
Aug 9 22:56:32 master postfix/smtpd[28590]: disconnect from mail-wm0-f41.google.com[74.125.82.41]
Aug 9 22:56:32 master postfix/smtp[28597]: 167AB5EDC6: to=<mail@beta.com>, orig_to=<mail@alpha.com>, relay=none, delay=0.07, delays=0.06/0.01/0/0, dsn=5.4.6, status=bounced (mail for beta.com loops back to myself)
Aug 9 22:56:32 master dovecot: lda(mail@alpha.com): msgid=<CAEFEUhY=7nVYKE4DZ2=rHxxskwepdx81T22JjPvDNjKssd8V1A@mail.gmail.com>: saved mail to INBOX
Aug 9 22:56:32 master postfix/pipe[28596]: 167AB5EDC6: to=<mail@alpha.com>, relay=dovecot, delay=0.1, delays=0.06/0.01/0/0.04, dsn=2.0.0, status=sent (delivered via dovecot service)
Aug 9 22:56:32 master postfix/cleanup[28595]: 295E960064: message-id=<20160809205632.295E960064@master.hostname.de>
Aug 9 22:56:32 master postfix/qmgr[21315]: 295E960064: from=<>, size=6288, nrcpt=1 (queue active)
Aug 9 22:56:32 master postfix/bounce[28599]: 167AB5EDC6: sender non-delivery notification: 295E960064
Aug 9 22:56:32 master postfix/qmgr[21315]: 167AB5EDC6: removed
Aug 9 22:56:32 master postfix/smtp[28602]: 295E960064: to=<mail@gmail.com>, relay=gmail-smtp-in.l.google.com[74.125.133.26]:25, delay=0.33, delays=0/0.01/0.11/0.22, dsn=2.0.0, status=sent (250 2.0.0 OK 1470776192 m8si7919586wjt.20 - gsmtp)
Aug 9 22:56:32 master postfix/qmgr[21315]: 295E960064: removed

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**Nuxwin** · Aug 10th 2016

@nextone

On the i-MSCP server, run the following command:

Code

dig axfr beta.com @127.0.0.1

and send me the output

**nextone** · Aug 10th 2016

output of: dig axfr beta.com @127.0.0.1

Code

beta.com. 10800 IN SOA ns1.beta.com. hostmaster.beta.com. 2016080203 10800 3600 1209600 3600
beta.com. 10800 IN NS ns1.beta.com.
beta.com. 10800 IN A 79.111.11.11
ftp.beta.com. 10800 IN A 79.111.11.11
ns1.beta.com. 10800 IN A 79.111.11.11
www.beta.com. 10800 IN CNAME beta.com.
beta.com. 10800 IN SOA ns1.beta.com. hostmaster.beta.com. 2016080203 10800 3600 1209600 3600
;; Query time: 6 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Aug 10 11:53:50 CEST 2016
;; XFR size: 7 records (messages 1, bytes 203)

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Here are the DNS record settings (screenshot by https://who.is/; domain name is replaced):

Thanks for your support!

**Nuxwin** · Aug 11th 2016

@nextone

From your i-MSCP server, run the following command and give us the result

Code

# dig MX beta.com @127.0.0.1

**nextone** · Aug 11th 2016

Code

; <<>> DiG 9.9.5-9+deb8u6-Debian <<>> MX beta.com @127.0.0.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 28015
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;beta.com. IN MX
;; AUTHORITY SECTION:
beta.com. 3600 IN SOA ns1.beta.com. hostmaster.beta.com. 2016080203 10800 3600 1209600 3600
;; Query time: 1 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Thu Aug 11 15:54:44 CEST 2016
;; MSG SIZE rcvd: 94

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**nextone** · Aug 18th 2016

Can nobody helps me with my issue?

**nextone** · Aug 25th 2016

Solved, same issue than https://youtrack.i-mscp.net/issue/IP-1603

1.3.0 - External mail server loop

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