Issue Plesk Postfix resolving external address as local

[antonio.abansys]

Server operating system version

CentOS7

Plesk version and microupdate number

obsidian 18.0.48

Hi to all,

I have a problem with postfix on plesk, Im trying to send a email to example@external.com from example@local.com and when I check the logs I can see that is trying to resolv as a local address.
I paste the log (I reemplace the real hosted address to local.com and external as external.com)

Dec 15 15:35:17 h0220 psa-pc-remote[16562]: 3335D10782FC1: from=<example@local.com> to=<example@external.com>
Dec 15 15:35:17 h0220 postfix/cleanup[26782]: 3335D10782FC1: filter: header Received: from webmail.local.com (localhost.localdomain [127.0.0.1])??by h0220 (Postfix) with ESMTPSA id 3335D10782FC1??for <example@external.com>; Thu, 15 Dec 2022 15:35:17 +010 from localhost.localdomain[127.0.0.1]; from=<example@local.com> to=<example@external.com> proto=ESMTP helo=<webmail.local.com>: plesk_virtual:[127.0.0.1]:12346
Dec 15 15:35:17 h0220 postfix/cleanup[26782]: 3335D10782FC1: filter: header To: example@external.com from localhost.localdomain[127.0.0.1]; from=<example@local.com> to=<example@external.com> proto=ESMTP helo=<webmail.local.com>: plesk_virtual:[127.0.0.1]:12346
Dec 15 15:35:17 h0220 postfix/cleanup[26782]: 3335D10782FC1: message-id=<148e42fe72525122af293bcd628180ce@local.com>
Dec 15 15:35:17 h0220 psa-pc-remote[16562]: 3335D10782FC1: py-limit-out: stderr: INFO:__main__:Setting 'X-PPP-Vhost' header to 'local.com'
Dec 15 15:35:17 h0220 psa-pc-remote[16562]: 3335D10782FC1: py-limit-out: stderr: PASS
Dec 15 15:35:17 h0220 psa-pc-remote[16562]: 3335D10782FC1: check-quota: stderr: SKIP
Dec 15 15:35:17 h0220 psa-pc-remote[16562]: 3335D10782FC1: spf: stderr: PASS
Dec 15 15:35:17 h0220 postfix/qmgr[23032]: 3335D10782FC1: from=<example@local.com>, size=1368, nrcpt=1 (queue active)
Dec 15 15:35:17 h0220 postfix/smtpd[27432]: disconnect from localhost.localdomain[127.0.0.1] ehlo=1 auth=1 mail=1 rcpt=1 data=1 quit=1 commands=6
Dec 15 15:35:17 h0220 postfix-local[28630]: 3335D10782FC1: from=<example@local.com>, to=<example@external.com>, dirname=/var/qmail/mailnames
Dec 15 15:35:17 h0220 dovecot: imap-login: Login: user=<example@local.com>, method=PLAIN, rip=::1, lip=::1, mpid=28631, TLS, session=<RygOw97vOMgAAAAAAAAAAAAAAAAAAAAB>
Dec 15 15:35:17 h0220 postfix-local[28630]: cannot chdir to domain dir external.com: No such file or directory
Dec 15 15:35:17 h0220 postfix-local[28630]: 3335D10782FC1: Unknown user: example@external.com
Dec 15 15:35:17 h0220 postfix/pipe[28628]: 3335D10782FC1: to=<example@external.com>, relay=plesk_virtual, delay=0.63, delays=0.6/0.01/0/0.02, dsn=2.0.0, status=sent (delivered via plesk_virtual service)
Dec 15 15:35:17 h0220 postfix/qmgr[23032]: 3335D10782FC1: removed

I saw a KB that said to comment the postfix/main.cf lines and restart postfix and apache but nothing happend

virtual_mailbox_domains = $virtual_mailbox_maps, hash:/var/spool/postfix/plesk/virtual_domains
virtual_alias_maps = $virtual_maps, hash:/var/spool/postfix/plesk/virtual
virtual_mailbox_maps = hash:/var/spool/postfix/plesk/vmailbox

I never have hosted the external address any idea?

 

[Peter Debik]

Does the recipient domain exist on the local server?

 

[antonio.abansys]

Does the recipient domain exist on the local server?

Hi Peter,

No, the recipient never exist on the local server, is external, and the server is trying to solve locally.

 

[Kaspar]

No, the recipient never exist on the local server, is external, and the server is trying to solve locally.

The recipient might not be local mailbox on the server, but is the domain also not present (for web hosting or dns) on the server?

 

[Dave W]

If the domain external.com is also set up on plesk then it will make the decision that the domains mail is also hosted on the server, unless you disable Mail for the domain under Mail Settings.

 

[antonio.abansys]

The recipient might not be local mailbox on the server, but is the domain also not present (for web hosting or dns) on the server?

Is external, I check the server and the recipient doesn't have registered on my server.

 

[antonio.abansys]

any news?

 

[Kaspar]

The recipient might not be local mailbox on the server, but is the domain also not present (for web hosting or dns) on the server?

You didn't fully answer my question yet.

 

[antonio.abansys]

You didn't fully answer my question yet.

I answered, sorry if my explanation was incorrect.
The domain is external, is not present on the server. No web, no DNS, no mail, fully external client, and my server is resolving that locally.
This are breaking my mind, If I do a dig to the external domain are resolving successful, dig A, dig MX, dig NS. But when I goint to mail to this domain in the logs trying to resolve locally

 

[Dave W]

plesk repair mail

 

[antonio.abansys]

plesk repair mail

didn't work.

cannot chdir to domain dir external.com: No such file or directory

 

[Kaspar]

Whats the response when you run the command # plesk bin mail --off external.com?

 

[antonio.abansys]

Whats the response when you run the command # plesk bin mail --off external.com?

Unable to find domain with name 'external.com'
exit status 4

 

[Kaspar]

Just to be sure, did you replace external.com with the actual domain name?

 

[antonio.abansys]

Just to be sure, did you replace external.com with the actual domain name?

haha yes of course!


this is very stange and frustrating. Cannot find a solution for that

 

[Kaspar]

I suspect that the external.com domain is present in the Postfix database. Which you can check with # postmap -s /var/spool/postfix/plesk/virtual_domains | grep external.com and # postmap -s /var/spool/postfix/plesk/virtual | grep external.com.

Do those commands return anything? If these commands return nothing, does postconf | grep mydomain return mydomain = external.com?

 

[antonio.abansys]

I suspect that the external.com domain is present in the Postfix database. Which you can check with # postmap -s /var/spool/postfix/plesk/virtual_domains | grep external.com and # postmap -s /var/spool/postfix/plesk/virtual | grep external.com.

Do those commands return anything? If these commands return nothing, does postconf | grep mydomain return mydomain = external.com?

Thank Kaspar.

The commands

# postmap -s /var/spool/postfix/plesk/virtual_domains | grep external.com and # postmap -s /var/spool/postfix/plesk/virtual | grep external.com.

return nothing.

about the

postconf | grep mydomain

return the domain of my company (is a shared server where have different subscription from clients)
If this can help, in mydestination I have this

mydestination = localhost.$mydomain, localhost, localhost.localdomain

 

[Kaspar]

That is strange. I am out of suggestions. Unless someone else has any additional suggestions I think your best bed would be to contact Plesk support. They can investigate the issue directly on your server.

How to get support directly from Plesk?

Question How to get support directly from Plesk? Answer Lease-type Plesk licenses purchased directly from Plesk running on supported Plesk version include full free support. Perpetual-type license...

support.plesk.com