Hi,
Answers in-line.
Gary Bowling wrote:
I've been using the toaster for quite some time, with great results
(thanks Bill for all the hard work!). I'm running the latest versions
(although my clamAV may be out of date as that happens frequently). My
system is a CentOS with the latest updates. I use most of the "add ons"
such as spamassassin, clamav, ripmine, simscan, tmda, and qmailmrtg. I
host about 15 domains, but not too many users per domain, the largest is
about 40 users.
Unfortunately I seem to recently be experiencing some strange problems
and am not sure of the best way to sort them out.
- Emails with large attachments are typically being delivered twice to
the end user.
This can happen when your server takes to long to scan the message and
the sender disconnects before you finish scanning. simscan doesn't
detect the disconnection and delivers the email but the remote side
tries again later.
Not much you can do about that except upgrade your hardware and/or make
sure you are running the latest ClamAV (The 0.90.x versions had long
reload times).
- Lots of spam, even though I have tweaked and tweaked on spamassassin,
the spam has more than doubled in the past month.
Are you manually training your bayes database ? Bayes can get out of
sync if you don't feed it ham and spam manually. Check some of the spam
that is slipping through to see what bayes_xx it scored on.
Also, are you running network tests ? The URI bls and other RBLs are a
great help in detecting spam.
- Users receiving failure notices even though the message is actually
received properly.
- Users receiving failure notices from emails they didn't actually send.
Both of these are most likely spammers sending emails as your users.
Not much you can do about it really.
- Some users get failures that say "protocol error" with not much detail.
Only time I've ever seen this is when your client.pem file is pooched
and the TLS stops working.
HTH,
Rick
