Dear friends,
I have a server running Qmail as as MTA and about 300 mail
accounts. I realized that I'm experiencing huge amount of incoming
traffic to the port 25, it's like 1 MB per minute, so it slows down my
Internet connection dramatically. This is only incoming traffic, both
outgoing SMTP and POP3 is not more than 10-20 kB per minute.
But this big amount of data doesn't go to the users' mailboxes. It
goes... nowhere? I have no idea what it is actually. Even is
someone would use my server as an open relay, the amount of
incoming and outgoing SMTP packages would be more or less the
same.
If someone has any idea, I would be very grateful for sending them
to me (priv). Thanks in advance.
Krzysztof Wychowalek
ICQ# 34184303
GSM +48600225435
PGP Key ID 0xEA9D2A3C