Resolved Mailman / can not send email

[Erwan]

Server operating system version

AlmaLinux 8.7

Plesk version and microupdate number

Plesk Obsidian v18.0.52

Hi all,

We have a project that forces us to keep Mailman on a hosting.
Everything worked fine under Centos (Postfix).
We have migrated on AlmaLinux 8.7 and activate Mailman.
All is ok.
We only have the following problem: when a message must be sent to Mailman subscribers, they are all blocked in "Relay access denied"

May 24 21:59:34 wvp171 postfix/smtpd[1280025]: disconnect from smtp1-g21.free.fr[212.27.42.1] ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quit=1 commands=7
May 24 21:59:34 wvp171 postfix/pipe[1280053]: 870DCAC03D6D: to=<[email protected]>, relay=mailman, delay=6.2, delays=6.1/0.01/0/0.09, dsn=2.0.0, status=sent (delivered via mailman service)
May 24 21:59:34 wvp171 postfix/qmgr[1268102]: 870DCAC03D6D: removed
May 24 21:59:35 wvp171 postfix/smtpd[1280020]: connect from localhost.localdomain[::1]
May 24 21:59:35 wvp171 postfix/smtpd[1280020]: NOQUEUE: reject: RCPT from localhost.localdomain[::1]: 554 5.7.1 <[email protected]>: Relay access denied; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<localhost.localdomain>
May 24 21:59:35 wvp171 postfix/smtpd[1280025]: NOQUEUE: reject: RCPT from localhost.localdomain[::1]: 554 5.7.1 <[email protected]>: Relay access denied; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<localhost.localdomain>
May 24 21:59:35 wvp171 postfix/smtpd[1280025]: NOQUEUE: reject: RCPT from localhost.localdomain[::1]: 554 5.7.1 <[email protected]>: Relay access denied; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<localhost.localdomain>

Do you have an idea of the problem?
I've try # plesk repair mail but non effect.

Thank you for your help.

 

[Erwan]

Mailman box appears in the postfix virtual_alias_map:

# postmap -s /var/spool/postfix/plesk/virtual | grep [email protected]
[email protected] [email protected]

 

[Erwan]

in the file /etc/postfix/main.cf:
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
Seems to be correct.

I've try to add:
smtpd_relay_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
but no effect.

 

[Peter Debik]

One thing that comes to my mind is the Tools & Settings > Mail Server Settings > Whitelist. Entries for 127.0.0.1 and ::1/128 might be missing from there. Could that be the cause?

 

[Erwan]

Perfect! Big thanks Peter. P

 

[Peter Debik]

Is it resolved?

 

[Erwan]

yes