> But I specifically mentioned RBL checks. Those can take a while. Things
like Razor2, Pyzor, and dcc checks can take a good while, too. I have
Razor2 and Pyzor timeouts set to 30 seconds. And sometimes they really
need that, too.

I have all of those, all of the default RBLS and 12 RBLs that aren't in the list. Scan times average 9 seconds on ancient hardware.


This is partially a function of scale. Machines that handle large numbers of messages probably don't want to hold the SMTP connection open while the scanning takes place, even if scan time is 9 seconds. Of course these users are possibly using a different system other than milters for SA.

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