Resolved postfix/postdrop[30592] warning: mail_queue_enter: create file maildrop/295690.30592: Permission denied

[samson]

Server operating system version

CentOS Linux 7.9.2009 (Core)

Plesk version and microupdate number

Plesk Obsidian Version 18.0.41

I've got thousands of warnings appearing in my mail log browser. All messages are the same apart from the ID numbers

I've just recovered from running a chmod -R 777 /
ran the 2 below codes in single user mode to fix the server
# for p in $(rpm -qa); do rpm --setperms $p; done
# for p in $(rpm -qa); do rpm --setugids $p; done

Reinstalled postfix, I can send emails OK, however, mail received are stuck in the queue due to the permissions.
Also used postfix set-permissions - but still the same

postfix/postdrop[30592]

warning: mail_queue_enter: create file maildrop/295690.30592: Permission denied

Hope you can help

Kind regards,

Simon

 

[Maarten]

Have you tried to run:

# plesk repair mail

 

[samson]

Yes, thanks, reported no errors

 

[Maarten]

This is the default on CentOS:

ls -ld /var/spool/postfix
drwxr-xr-x. 18 root root 231 May 31 02:45 /var/spool/postfix

# ls -l /var/spool/postfix
drwx------. 2 postfix root        6 May 24 19:45 active
drwx------. 2 postfix root        6 May 24 19:45 bounce
drwx------. 2 postfix root        6 May 20 10:49 corrupt
drwx------. 9 postfix root       69 May 20 10:49 defer
drwx------. 9 postfix root       69 May 20 10:49 deferred
drwx------. 2 postfix root        6 May 20 10:49 flush
drwx------. 2 postfix root        6 May 20 10:49 hold
drwx------. 2 postfix root        6 May 24 19:45 incoming
drwx-wx---. 2 postfix postdrop    6 May 24 19:45 maildrop
drwxr-xr-x. 2 root    root      197 May 24 19:42 pid
drwxrwx---. 2 postfix postfix   255 Jun  6 15:24 plesk
drwxrwx---. 2 postfix popuser    24 May 31 02:45 plesk-pop
drwx------. 2 postfix root     4096 Jun  6 15:24 private
drwx--x---. 2 postfix postdrop   88 May 24 19:42 public
drwx------. 2 postfix root        6 May 20 10:49 saved
drwx------. 2 postfix root        6 May 20 10:49 trace

 

[samson]

Here's mine, maildrop and public slightly different, but I don't know how to change them

drwx------. 2 postfix root 12288 Jun 10 16:42 active
drwx------. 2 postfix root 4096 Jun 10 16:42 bounce
drwx------. 2 postfix root 4096 Feb 8 02:46 corrupt
drwx------. 18 postfix root 4096 Feb 8 02:46 defer
drwx------. 18 postfix root 4096 Feb 8 02:46 deferred
drwx------. 2 postfix root 4096 Feb 8 02:46 flush
drwx------. 2 postfix root 4096 Feb 8 02:46 hold
drwx------. 2 postfix root 4096 Jun 10 16:42 incoming
drwx-ws---. 2 postfix postdrop 20480 Jun 10 13:20 maildrop
drwxr-xr-x. 2 root root 4096 Jun 10 16:42 pid
drwxrwx---. 2 postfix postfix 4096 Jun 10 16:42 plesk
drwxrwx---. 2 postfix popuser 4096 Jun 10 16:41 plesk-pop
drwx------. 2 postfix root 4096 Jun 10 16:42 private
drwx--s---. 2 postfix postdrop 4096 Jun 10 16:42 public
drwx------. 2 postfix root 4096 Feb 8 02:46 saved
drwx------. 2 postfix root 4096 Apr 13 20:21 trace

 

[Maarten]

# chmod 730 maildrop
# chmod 710 pubic

You can also run this to check the installation:

# postfix check

 

[samson]

The changes don't seem to update

I did the following:

cd /var/spool/postfix
systemctl stop postfix
chmod 730 maildrop
chmod 710 pubic
systemctl start postfix
ls -l /var/spool/postfix

Also, how do you convert the letters into numbers

 

[Maarten]

Also, how do you convert the letters into numbers

If you know how the octal number system works, converting the drwxrwxrwx to numbers is pretty straightforward.
There are also many tools online to do this for you, like this one: chmod Man Page with examples and calculator - Linux - SS64.com

So postfix still doesn't work? Did you get an error after #postfix check ?

 

[samson]

Thanks for the example on the chmod. found one looks good File Permissions Ninja
Postfix check doesn't give any errors

 

[Maarten]

How about this:

systemctl stop postfix
killall -9 postdrop
systemctl start postfix

 

[samson]

Still the same.

 

[samson]

killall -9 postdrop
postdrop: no process found

 

[samson]

I've followed the below article and the last point suggests to alter

snapwebsites postfix/postdrop[18189]: warning: mail_queue_enter: create file maildrop/259373.18189: Permission denied

(The padlock of an old barbed wired gate) A Permission Problem Today I noticed an error in my mail.log file about maildrop, a postfix tool, having permission problems. The errors look like this: Aug 22 20:58:01 snapwebsites postfix/postdrop[18189]: warning: mail_queue_enter: create file...

linux.m2osw.com

NoNewPrivileges = false​

Don't know which file to alter

 

[samson]

Issue is now fixed, thanks to plesk. There were issues with my plesk installation, which once fixed allowed killall -9 postdrop to work, so thanks to

maartenv for helping me out.​