Issue Emails bounce on Postfix or Qmail

[JohnnyU]

I can send mail from this domain account and receive it in gmail in seconds
When i send mail from a gmail account to the same Plesk email it bounces back with different errors for Postfix and Qmail.

Gmail Error Messages

Postfix: 'Status: 5.1.1b Diagnostic-Code: X-Postfix; User unknown in virtual alias table'
QMAIL: 'Sorry, no mailbox here by that name. (#5.1.1) qmail 7745 invoked from network)'

Plesk Error messages

postfix/trivial-rewrite[1161]: warning: do not list domain domain.com in BOTH mydestination and virtual_alias_domains
postfix/trivial-rewrite[1161]: warning: do not list domain domain.com in BOTH mydestination and virtual_mailbox_domains
postfix/qmgr[1044]: CB4071220: from=<mail@gmail.com>, size=2439, nrcpt=1 (queue active)
postfix/smtpd[1592]: disconnect from mail-qt0-f175.google.com[209.85.216.175]
postfix/smtp[2551]: connect to gmail-smtp-in.l.google.com[2607:f8b0:4003:c03::1a]:25: Network is unreachable
postfix/error[1601]: CB4071220: to=<admin@mydomain.com>, relay=none, delay=0.47, delays=0.34/0.06/0/0.07, dsn=5.1.1, status=bounced (User unknown in virtual alias table)

Error from log is described here: https://support.plesk.com/hc/en-us/articles/213910865
Another error is described here https://support.plesk.com/hc/en-us/...OTH-mydestination-and-virtual-mailbox-domains


Strange thing is that it works to send and receive from another domain i have in plesk!

 

[Bitpalast]

https://support.plesk.com/hc/en-us/...OTH-mydestination-and-virtual-mailbox-domains does not help? Have you checked
# grep mydestination /etc/postfix/main.cf |grep -v "#"
?

 

[JohnnyU]

I checked and it is different but i did not touch it so probably because of the settings done in Plesk, tried everything
And since i have another server on Plesk Onyx i checked that one too and the mydestination line is different but similar to the backup file found on both servers

server 1: mydestination = localhost.$mydomain, localhost, localhost.localdomain
server 2 & backup file: mydestination = $myhostname, localhost.$mydomain, localhost

tried the backup file and the error is: Diagnostic-Code: X-Postfix; unknown user: "admin" instead of the usual: Diagnostic-Code: X-Postfix; User unknown in virtual alias table

/var/qmail/bin/relaylock[27247]: /var/qmail/bin/relaylock: mail from 209.85.216.169:32936 (mail-qt0-f169.google.com)
qmail-queue-handlers[27249]: Handlers Filter before-queue for qmail started ...
qmail-queue-handlers[27249]: from=user@gmail.com
qmail-queue-handlers[27249]: to=admin@mydomain.com
qmail-queue-handlers[27249]: handlers_stderr: SKIP
qmail-queue-handlers[27249]: SKIP during call 'check-quota' handler
qmail-queue-handlers[27249]: starter: submitter[27251] exited normally
1295354762.310109 new msg 2784541
1295354762.310344 info msg 2784541: bytes 2392 from <user@gmail.com> qp 27251 uid 2020
1295354762.322790 starting delivery 8: msg 2784541 to local admin@mydomain.com
qmail: 1295354762.322820 status: local 1/10 remote 0/20
qmail: 1295354762.329194 delivery 8: failure: Sorry,_no_mailbox_here_by_that_name._(#5.1.1)/
qmail: 12953547622.329241 status: local 0/10 remote 0/20
qmail-queue-handlers[27254]: Handlers Filter before-queue for qmail started ...
qmail-queue-handlers[27254]: from=
qmail-queue-handlers[27254]: to=user@gmail.com
qmail-queue-handlers[27254]: Unable to get sender domain by sender mailname

EDIT: I found a resolve: in Plesk - Tools & Settings - Server Settings i changed the 'Full hostname' to another domain i have on plesk but i do not use.
Not sure if this has any implication but in Tools & Settings - Mail Server Settings - i changed to 'Send from domain IP addresses and use domain names in SMTP greeting'

Now in Postfix config file main.cf i have that domain shown on 'myhostname = NEWDOMAIN.COM'. Tested with forwarding, i can send & receive mail, everything works as expected


------------------------------------------------

Another 'fix' i found here: https://support.plesk.com/hc/en-us/...-BOTH-mydestination-and-virtual-alias-domains

In main.cf i removed mydestination & disabled virtual_alias_maps: #virtual_alias_maps = $virtual_maps, hash:/var/spool/postfix/plesk/virtual