[Greylist-users] Waiting until after the DATA phase.
David F. Skoll
dfs at roaringpenguin.com
Wed Jun 25 16:35:39 PDT 2003
On Wed, 25 Jun 2003, Corey Huinker wrote:
> Now, switching backend DBs is certainly an option. The stored procs are
> possible today in Oracle, SQLServer, DB2, PostgreSQL, etc.
Just as a data point, we use PostgreSQL in our commercial product.
It works very well.
> If you don't find the sender's address
> in the new sender_address table, then you know this is a first time
> receipt, and you can just blindly do your first-time inserts,
... assuming your database supports transactions. Remember, you can
have multiple parallel filters running because of multiple parallel MTA
> Greylisting is a strange duck in that it ideally fits in the filter chain
> after valid-user and dnsbl checks, but before body checks. And so far,
> only sendmail is architected to allow for that.
Right. Some of us keep pushing the other MTA vendors to implement
the equivalent of milter, but no luck so far. :-(
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