I can
second the need for a gateway defense when under attack. We run a Windows
shop and were being crushed under multiple dictionary attacks for two
domains on a daily basis. I took the daunting task to build our first Linux
box running Postfix. The first box was a tough start though I had a
employee who had Linux experience. We are running Postfix on OpenBSD 3.6 with
MySql for dynamic update ability. (I am still working on grabbing additions,
updates and deletions from SmarterMail admins so we can throw all our domains in
Postfix and update in realtime) After a few weeks we added a second box in the
event the first box went down. The second box was a breeze since it was
basically a duplication. Both mx records now point at the two boxes. The
hardware was old 500Mhz and 1ghz cpu with 512mbs of ram each. The 1ghz is
primary and takes 75% of the load without much effort with plenty of
free memory. The whole setup allows the main server running
SmarterMail/Declude Pro/Sniffer/F-Prot to respond quickly to POP, web mail and
smtp traffic requests.
The
Linus approach only should cost you some time and old equipment as the software
is free. Our experience over the last two years showed it was worth climbing the
short Linux learning cliff. And it is true ... they run
forever
One
important note not related to using a gateway: We never bounce spam e-mail
back to the "sender". The backscatter traffic can kill you and skew your
reports.
Michael Jaworski
Puget Sound Network, Inc. (206) 217-0400 (800) 599-9485
|
Title: Message
- RE: [Declude.JunkMail] Declude Woes Michael Jaworski
- RE: [Declude.JunkMail] Declude Woes Will
- RE: [Declude.JunkMail] Declude Woes Michael Jaworski
- Re: [Declude.JunkMail] Declude Woes Matt
- RE: [Declude.JunkMail] Declude Woes Will
- Re: [Declude.JunkMail] Declude Woes... Darin Cox
- RE: [Declude.JunkMail] Declude... Will
- Re: [Declude.JunkMail] Dec... Darin Cox
- Re: [Declude.JunkMail]... Ing. Andrés E. Gallo
- Re: [Declude.JunkMail]... Ing. Andrés E. Gallo
- RE: [Declude.JunkMail] Declude... Will