Mail “access denied” error after update to 1.7

[mrmarkuz]

When

• User domain is the same as the mail domain
• Addusers is NOT set for the mail domain
• An alias address is created for the mail domain (I tried internal samba user destination and external destination)

then the mail is rejected.

If addusers is enabled it’s working but without addusers and an alias address it doesn’t work when the user domain is the same as the mail domain.

Steps to reproduce

• Create a user domain domain.test
• Create a mail domain domain.test with addusers and addgroups disabled
• Create an alias address for the domain, destination can be internal or external

Expected behavior

Mails from external are received and forwarded to the destination of the alias address

Actual behavior

Mails from external aren't received and following error is thrown:

2025-07-11T09:47:34+02:00 [1:mail1:postfix/smtpd] NOQUEUE: reject: RCPT from mail-ed1-f43.google.com[209.85.208.43]: 554 5.7.1 <markus@ad.domain.tld>: Recipient address rejected: access denied;

Components

Mail 1.7.0+

See also

https://community.nethserver.org/t/mail-access-denied-error-after-update-to-1-7/26021

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Thanks to Charles Steaderman

[DavidePrincipi]

In Testing 1.7.2-dev.1

Test case

Check the bug is not reproducible with the Testing version.

[mrmarkuz]

Test case not verified

• Mail to an alias address that is also a domain user is rejected: "Recipient address rejected: access denied".
• Mail to an alias address without same username is working.