SOHO Email Hosting or Alternatives
Ben Scott
dragonhawk at gmail.com
Tue Apr 24 11:25:30 EDT 2007
On 4/24/07, Lloyd Kvam <lkvam at venix.com> wrote:
> I assume my server tolerance for "bad
> email" matches reasonably well to the final server (Maybe it's fussier).
Ahh. That should work pretty well, then.
I had a client once who wanted everyone forwarding their mail to
different systems, and with no spam control on the forwarder, since
everyone wanted to keep their existing anti-spam solution. I
eventually gave up and told Sendmail not to generate DSNs. It was
what they wanted... ~shrug~
> One other item I've noticed. More and more mail servers are not
> bothering to report delivery failures.
Yah. Backscatter is a huge problem -- as big as the spam itself.
If a message is judged to be spam, it is considered a very bad idea to
omit a new SMTP envelope in response. Rejecting during the sender
SMTP transaction is okay. But rejecting during SMTP requires
real-time spam analysis, which is expensive. So most of the time,
spam filtering is done in batch fashion, which means no notification
to the (usually forged) sender.
-- Ben
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