Sendmail: How does one blacklist annoying spammers?
ignored_mailbox at yahoo.com.au
Mon Jun 28 03:56:34 UTC 2010
>>> So if you're gonna gray list - please whitelist all the standard ISP
>>> outbound mx hosts ...
>> That's gotta be a huge list. And won't some of them be spam sources,
> Not huge at all - I'm doing this for the outbound MX's of trusted mail
> senders. Google uses about 2,700 outbound .. they are all readily
> available. So we're talking a few thousand hosts.
Only a few thousand? What do you think is a huge list? And that's just
your list of mail servers for one service... What about the other ISPs,
the thousands of them?
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