Symptoms

The following errors can be found in /usr/local/psa/var/log/maillog:

Failure_to_exec_mailman_wrapper. WANTED_gid_110,_GOT_gid_101. (Reconfigure_to_take_101?)/did_0+0+1/

 Failed_to_exec_mailman_wrapper:_unable_to_determine_caller's
_group_name/

Resolution

To solve this issue follow the steps below.

- Check that /var/qmail/bin/mm_wrapper has right permissions as listed below:



If not, change the permissions and ownership to the right ones:



- Make sure that 'popuser' UID (user ID) and GID (group ID) are 110:



- If popuser GID is 101 (as reported in the above error) or other number, it is needed to be changed to 110.

- Stop services which use 'popuser' user and group: mailman, qmail, courier-imap, xinetd or inetd. Then check that no other uses 110 GID and change popuser's GID to 110 in /etc/group file and in /etc/passwd (using `vipw` utility):

/etc/group:
popuser:x:110:

/etc/passwd:
popuser:x:110:110:POP3 service user:/:/bin/false

- Run the following command to rebuild qmail configuration files:



-Then you need to find out all files which are owned by previous popuser GID (for example 101) and change their ownership to the new popuser group ID:



On FreeBSD:


- Make sure that all users in /var/qmail/users/assign has group ID 110.

- Start the services back.