Also, I am running a custom smtp proxy in front of postfix to log all SMTP transactions, and postfix is configured to be very lenient in terms of checking.
Tom
postmaster@webisp.co.uk wrote:
Hi
Thanks for the offer.
What is a a spam sink, can you redirect it via MX records?
I am interested, as you say, in genuine spam, but not too bothered what the source is.
I do not use this account for anything else, so there are no non-spam messages in it.
Thanks Tom
Neale Pickett wrote:
On Wednesday 21 March 2007 1:47 pm, postmaster@webisp.co.uk wrote:
However at the moment I am not getting much spam to my mail server - running dovecot and postfix :)
You need to be really careful about this. It turns out that getting a *clean* spam feed is quite challenging. You want to make sure it's:
- Verbatim spam (not forwarded, classified, or otherwise messed with)
- 100% spam, in other words you want to be absolutely certain that a "legitimate" email didn't slip in, for instance, you want to make sure people aren't able to taint it by redirecting real email from their mother-in-law
- An accurate representation of the sort of spam you're interested in. For instance, do you care about things that postfix could drop by checking the hostname given with HELO? Are you interested in spam resulting from usenet posts, web spiders, or something else?
I have a spam sink--currently turned off--that I can re-enable for you if you aren't too picky about the last point. Better, I think, would be for you to seed your own spam sink, but that takes time and maybe you can't wait.
Neale