We have a big problem on one mail server. Since Sunday night users
cannot get their mail. We have a vpopmail setup that runs with qmail.
Although originally thinking it was and may be a spam attack, certain
sender addresses have been put in /var/qmail/control/badmailfrom.
When looking at output from top, I am constantly seeing:
37544 qmails 2 0 1912K 1444K select 0 31:03 0.83% 0.83%
37550 qmailq -6 0 888K 388K piperd 1 20:56 0.00% 0.00%
Last night the cpu utilization was around 80% for qmail-clean.
I am not sure if qmail has somehow become broken or, this is a vpopmail
Any help would be gratefully appreciated.