On a new linux mailserver I was having an erratic problem with mysql and
pop3 authentication. Authentication works 90+% of the time.
However, using The Bat! and Outlook clients, I randomly see the
following authentication failure and the user must poll pop3 again -
which then succeeds.
-- this text from TheBat --
FETCH - Server reports error. The response is: vmysql: can't read
settings from /home/vpopmail/etc/vpopmail.mysql -ERR aack, child crashed
-rw-r----- 1 vpopmail vchkpw 45 Oct 1 08:25 vpopmail.mysql
I didn't think the pop3 daemon is crashing (i.e. bad mem limits in 'run'
/service/qmail-send: up (pid 2568) 3791 seconds
/service/qmail-send/log: up (pid 2570) 3791 seconds
/service/qmail-smtpd: up (pid 2574) 3791 seconds
/service/qmail-smtpd/log: up (pid 2569) 3791 seconds
/service/qmail-pop3d: up (pid 2571) 3791 seconds
/service/qmail-pop3d/log: up (pid 2576) 3791 seconds
messages in queue: 0
messages in queue but not yet preprocessed: 0
In spite of what the qmailctl stat told me, I found that increasing the
pop3 'run' file memory limit from 8000000 to 12000000 appears to
suppress this issue.
Any thoughts on "why" would be welcome. Otherwise, one for the archives...