Hello!
Imagine the following situation: there are 2 qmail+vpopmail servers; say,
mail1 and mail2. user@mail1 have a mailbox and also copies all his mail to
user@mail2, via some forwarding script. Eventually, user@mail2 goes over
quota; the next message forwarded from user@mail1 gets bounced. Imagine
that user@mail1 is over quota too; than, the bounce will bounce AFTER SOME
TIME, WITH BRAND NEW MESSAGE. Not recognising that bounce as a bounce, mail2
will bounce that bounce again.
And two servers will pingpong, generating huge amount of traffic (actually,
this amount is channel-bounded).
The suggested fix is to create a new control file for qmail, badtcptto,
consisting of pairs of values:
user@mail1 "User is over quota"
and so on.
So some messages will bounce early, reducing load and preventing bounce
generation.
Or there is some other solution?
Alex.
