Spam attacks

[MkII]

Our email server is being hit by about 300 fishing attacks a day trying random 4 or 5 character prefixes

 

Any ideas on what can be done about it? Our filtering is done by the LA and they say they can't see a pattern!

[NetDiag]

Theres nothing worse than being attacked by someone throwing spam at you! It can be quite painful too if it is the canned variety!

 

[Ric_]

Take a look at Proxmox ( http://www.proxmox.com ) - sits between your mail server and the rest of the world.

 

It's basically a mail proxy that runs Spamassin and some AV stuff.

[Geoff]

yep, we have a custom built spam assassin box to filter out things before it hits exchange.

[tom_newton]

1. Don't have catch-all email addresses - bounce improperly addressed garbage

 

2. Use a decent Spam filter - SA is OK if you're as clued-in as Geoff, we sell a packaged up version of the commercial Mailshell filter, which is a fair bit better than SA, and miles easier

 

3. Greylisting?

[MkII]

Thanks guys I'll pass those tips on.

 

(more business fro smoothwall perhaps! )