Large uptake in spam?

[Scott Silva]

on 3-24-2008 11:27 AM Rob Poe spake the following:
> I've noticed a large uptake in the amount of spam my gateways are seeing.
> 
> Of course, it's causing a higher than normal load on the servers, and people are complaining because we're getting SA timeouts due to the load.
> 
> Do people here use / recommend setting up Sendmail to reject based on no valid reverse DNS?
> 
> Milter-SAV ?
> 
> What free RBL's are people using?  The ones I've seen are "Use this lightly" and if you don't .. you get blacklisted from them ..
> 
> What else do you recommend?
> 
> I'm using Sendmail / SMF-Grey / SA / MailScanner
> 
> Server is P4 1.9 2gigs mirrored IDE hard drives..
> 
> 
> 
The best thing I can recommend is to look at your logs at which blacklists 
have hit at 100% spam rate. Mailwatch helps here, but you can dig in your logs 
if you need to.
Through the above testing I have found I can use spamcop, njabl, dsbl, cbl, 
sorbs and spamhaus at the end. With the other lists taking the brunt of the 
work, I can still use spamhaus with better than 70% less queries.


-- 
MailScanner is like deodorant...
You hope everybody uses it, and
you notice quickly if they don't!!!!

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