Resolved Mail forwarding broken, Permission denied

[Frostbolt]

Hi,

Since this night suddenly email forwarding doesn't work anymore:

May 29 03:14:48 domain postfix/pipe[22684]: 817124E0087: to=<...>, relay=plesk_virtual, delay=0.28, delays=0.09/0/0/0.19, dsn=4.3.0, status=deferred (temporary failure. Command output: plesk sendmail[22700]: Failed to change gid (1): Operation not permitted plesk sendmail[22701]: my_popen(): execve(/usr/lib64/plesk-9.0/sendmail/sendmail.postfix) failed: Permission denied [13] plesk sendmail[22701]: Unable to execute MTA plesk sendmail[22700]: sendmail unsuccessfully finished with exitcode 70 plesk sendmail[22708]: Failed to change gid (1): Operation not permitted plesk sendmail[22709]: my_popen(): execve(/usr/lib64/plesk-9.0/sendmail/sendmail.postfix) failed: Permission denied [13] plesk sendmail[22709]: Unable to execute MTA plesk sendmail[22708]: sendmail unsuccessfully finished with exitcode 70 plesk sendmail[22716]: Failed to change gid (1): Operation not permitted plesk sendmail[22717]: my_popen(): execve(/usr/lib64/plesk-9.0/sendmail/sendmail.postfix) failed: Permission denied [13] plesk sendmail[22717]: Unable to execute MTA plesk sendmail[22716]: sendmail unsuccessfully finished with exitcode 70 4.2.1 Message can not be delivered at this time )

I've found this help article:

Mail form or mail forwarding does not work on Plesk server: execve(/usr/lib/plesk-9.0/sendmail/sendmail.postfix) failed: Permission denied [13]

Applicable to: Plesk for Linux Symptoms Mail forwarding or mailing form on a website hosted in Plesk does not work. The following error message can be found in /var/log/maillog: CONFIG_TEXT:...

support.plesk.com

But when I run: stat /usr/lib64/plesk-9.0/sendmail/sendmail.postfix
I get:
Access: (0755/-rwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)

And for stat /usr/lib64/plesk-9.0/postfix-sendmail-wrapper
I get:
Access: (0755/-rwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)

So that looks okay, I guess?

Any tips in which direction I should go?

 

[Frostbolt]

Problem fixed itself after uninstalling postfix and installing it again.