At 09:57 PM 12/11/2001 -0600, Dan Liston wrote:
>15 should be a safe number for AOL, but I do not think they allow more
>than 20 recipients per message.
It's much, much more complex than that. They allow *some* number of
messages with more than 20 recipients, and *some* rate of messages with
even as few as one recipient, and they apply some complicated heuristics to
decide if you're a spammer based on number of messages in elapsed periods
with numbers of recipients all fitting in. Even more, they allow these to
be exceeded and their boundary MTAs return success, with the spam checks
applied inside and the messages thrown away silently.
However, I'm not worried for myself, at least in the short run, because we
went through a messy and semi-public negotiation/protest resulting in my
site's being whitelisted to deliver to them under limits that would allow
us to squeak past when others might get filtered.
References:
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