Issue SELinux Blocked PHP mail() sent E-Mail

[r1235613]

My WordPress show me a debug message "Could not instantiate mail function."
So I check /var/log/maillog and find follow message:

Oct 22 00:11:12 s010 postfix/postalias[6432]: fatal: open /etc/postfix/main.cf: Permission denied
Oct 22 00:11:13 s010 journal: plesk sendmail[6433]: handlers_stderr: PASS
Oct 22 00:11:13 s010 journal: plesk sendmail[6433]: PASS during call 'limit-out' handler
Oct 22 00:11:13 s010 journal: plesk sendmail[6433]: Unable to rename '/usr/local/psa/handlers/spool/message4U5A5S' file: Permission denied
Oct 22 00:11:13 s010 journal: plesk sendmail[6433]: System error (/usr/local/psa/handlers/spool/message4U5A5S): No such file or directory
Oct 22 00:11:13 s010 journal: plesk sendmail[6435]: Unable to open temporary file /usr/local/psa/handlers/spool/message4U5A5S (2): No such file or directory

I think it is SELinux problem.
It is Work after I turn off SELinux.

How to fix this problem without turn off SELinux？
I was try restorecon -R -v spool/ but it still not work.

 

[UFHH01]

Hi r1235613,

pls. try for example:

restorecon -v /etc/postfix/main.cf

 

[r1235613]

Hi r1235613,

pls. try for example:

restorecon -v /etc/postfix/main.cf

Unfortunately, it's invalid.

My system is building from Plesk on AWS Marketplace.

 

[UFHH01]

Hi r1235613,

Unfortunately, it's invalid.

Could you pls. tell us, WHAT is "invalid" here? The command to RESTORE the SELinux context for a file is correct.

How did you install postfix on your server?
Which operating system do you use?
Which current Plesk version ( incl. #MU ) are you using?

 

[r1235613]

invalid is mean it is not work after use restorecon -v /etc/postfix/main.cf .
Plesk Onyx ver.17.5.3 Update #24.
Postfix has installed on plesk when I set up AMI.
My system is Plesk Onyx on CentOS 7 (BYOL).

 

[UFHH01]

Hi r1235613,

did you consider to have a look at the SELinux - log - files, in order to investigate the cause of the blocking?