Being Buried In Returned Email - Need To Mark Certain IPs

2008-06-29 Thread thadcoco
Hi All, My server CentOS 4, Sendmail, MailScanner (SA & ClamAV) is being buried by spoofed emails that are bounced back to my domain by the recipient's servers. Virtually all these emails are being sent from a zombie at a single IP. i.e.: All the messages contain the following line somewhere wi

Re: Being Buried In Returned Email - Need To Mark Certain IPs

2008-06-29 Thread thadcoco
Nigel Frankcom-2 wrote: > > Can you not block them at your router or firewall? Then they are not > taking up threads either. It's how I deal with heavy hitters. > > Nigel > No, I wish I could, but these bounced emails are not coming To Me from a single IP. It goes like this: 1. Some doofus'

Re: Being Buried In Returned Email - Need To Mark Certain IPs

2008-06-29 Thread thadcoco
Joseph Brennan wrote: > > > Why not just tell procmail to drop them? > > : 0 > * ^Received: .* 89.83.98.193 > /dev/null > > Joseph Brennan > Columbia University Information Technology > I just tried, but it doesn't work either. Recall that the nasty IP is wrapped as part of an attachment. I

Re: Being Buried In Returned Email - Need To Mark Certain IPs

2008-06-29 Thread thadcoco
Raymond Dijkxhoorn wrote: > > Hi! > > And exactly why dont you block those on your MTA? Bit waste on CPU cycles > like this... first process then, and then trash it anyway. > > Bye, > Raymond. > Well, mostly because I don't have any idea how to do so at the MTA level and also I would think

Re: Being Buried In Returned Email - Need To Mark Certain IPs

2008-06-29 Thread thadcoco
John Hardin wrote: > > > Another alternative if you're using sendmail is to use milter-regex to > look for that IP in a Received: header and reject the message with a 550 > at SMTP time. > -- > That would certainly appear to be the best solution so far. However, I can't get milter-regex to m