Issue Emails to postmaster@ not delivered without root@ (custom `adminAliases`)

[jnthn]

Server operating system version

AlmaLinux 10.1

Plesk version and microupdate number

18.0.77

Per the guide, I tried updating the mail aliases to only have postmaster@ enabled:

[mail]
adminAliases = postmaster

However, when I then try to send an email to postmaster@ on some domain, the email doesn't get delivered to the administrator's address, and I see the following errors in the Postfix logs:

cannot chdir to mailname dir root: No such file or directory
Unknown user: root@[hostname.com]

After some debugging, it appears everything works when adding root@ as mail alias:

[mail]
adminAliases = postmaster root

Is it intended behaviour (that root@ is required for other aliases to function)? If yes, it may be good to mention this in the guide. If not, maybe this bug could be resolved?

 

[Sebahat.hadzhi]

I believe the issue you are encountering could be relate to the emails that are sent to the default mailboxes, which go to [email protected]. However, if you have the option, please open a support ticket for further investigation on what emails exactly fail with the reported error.

 

[jnthn]

@Sebahat.hadzhi I don't have a support plan unfortunately.

Perhaps the following steps would help you reproduce the issue:

1. Add a domain on the server (example.com)
2. Create a mailbox on that domain ([email protected])
3. Set that email address in the Plesk admin user's profile
4. Update panel.ini with:
   

   [mail]
   adminAliases = postmaster

5. Send an email to [email protected]
   1. ❌ It is not delivered to the mailbox [email protected]
   2. ❌ The Postfix logs show:
      

      cannot chdir to mailname dir root: No such file or directory
      Unknown user: root@[hostname.com]

6. Now update panel.ini with:
   

   [mail]
   adminAliases = postmaster

7. Again send an email to [email protected]
   1. ✅ It is now delivered to the mailbox [email protected]

I would expect it to also work for the case with only adminAliases = postmaster; i.e., the ❌ failures are bugs.

 

[Kaspar]

@jnthn, did also ran the plesk repair mail -y command after you've changed panel.ini file (step 5), as the Plesk documentation suggested?

 

[jnthn]

@Kaspar Oops, you are fully right! I did do that, but I forgot to mention it in my reproduction steps above. So the correct steps are:

1. Add a domain on the server (example.com)
2. Create a mailbox on that domain ([email protected])
3. Set that email address in the Plesk admin user's profile
4. Update panel.ini with:
   

   [mail]
   adminAliases = postmaster

5. Run plesk repair mail -y to apply
6. Send an email to [email protected]
   1. ❌ It is not delivered to the mailbox [email protected]
   2. ❌ The Postfix logs show:
      

      cannot chdir to mailname dir root: No such file or directory
      Unknown user: root@[hostname.com]

7. Now update panel.ini with:
   

   [mail]
   adminAliases = postmaster

8. Run plesk repair mail -y to apply
9. Again send an email to [email protected]
   1. ✅ It is now delivered to the mailbox [email protected]

I would expect it to also work for the case with only adminAliases = postmaster; i.e., the ❌ failures are bugs.