[imp] hardening imp against spammers

[Lord Apollyon]

> Ok...I think I did misinterpret this and thought you meant "no, it
> shouldn't be accepted" when you really meant "no, there's no reason not to
> incorporate this feature even though it's only needed in special cases."
> 
> Are you dealing with the same problem at that customer's site?
> 
> Maybe I'll be a little swifter on the uptake after actually sleeping
> tonight.
> 
> I'm a little bummed that thus far, the only hits I've gotten on the dnsbl
> code appear to be legitimate customers on remote IPs that either are or
> recently were systems infected with spam proxies.

Well, I know that sendmail has a configuration item for this.  Unless you're
running some kind of mailing list, there's little good reason to allow more
than 40 recipients in a given email transaction.

=R=