Issue with dovecot/postfix

Got an issue with all incoming mails after installing webpanel...

Code: [Select]

temporary failure. Command output: pipe: fatal: pipe_command: execvp /usr/libexec/dovecot/deliver: Permission denied)

lrwxrwxrwx  1 root root          11 Mar 22  2017 deliver -> dovecot-lda
-rwsr-s---  1 root mgrsecure  25168 May 10  2016 dovecot-lda

Any solution with that?

You have some program piping to dovecot-lda program.
You have dovecot-lda program setuid for user and group, meaning this program will be executed as the 'root' user or 'mgrsecure' group permissions.

These messages are from what logfile..??

My installation have not these files setuid.
Perhaps you have a security problem?

Regards,
Netino