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Re: Unified SPF: block versus factored records for HELO and MTAMA ark scopes

2004-06-25 06:11:58

John R Levine wrote:

Even on a UNIX box there are good reasons to prefer a per thread model
to a per process model, process creation and teardown in UNIX is only
lightweight compared to other O/S.

Depends how big the process is.  Forking sendmail takes forever, but
qmail's server is small and snappy.  I realize that one can do threads on
Unix boxes, but I don't think that many MTAs actually do so.

I'm not going to disagree that forking on Unix takes longer than utilizing a long-running thread, so that's why we (Sendmail) have been implementing these checks in external milters, which are long-running threaded processes which the MTA can talk to.

Existing perceptions of architecture should not be a major burden on the protocol design process; most of those perceptions are out-of-date anyways. ;)

-Rand


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