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http://bugs.exim.org/show_bug.cgi?id=956 --- Comment #1 from Phil Pennock <[email protected]> 2010-01-25 21:20:55 --- Beware, here lies the potential for major chaos. The spam-scanning server code is failing to return an expected response. That means it's buggy. If the bug is triggered by the message being processed, then your farm of scanners can be taken out in quick succession by one bad message. If Exim behaves as it currently does, then a second attempt later will knock out another server, but the first server should be up again. If Exim is changed as you suggest, then one message knocks them all out. "Could not connect to server" does not imply a bug, it means we couldn't reach it and trying another server increases reliability, by making a pool of resources available. This is an expected part of the flow. Servers which fail to return an expected error are not an expected part of the flow. I personally am opposed to your suggested change, as it currently stands. [Note: I'm not a committer, so that that's not all that bad] If you can refine the proposal to address my concerns, enumerating what should happen in which circumstances and why it's safe, that would be good. -- Configure bugmail: http://bugs.exim.org/userprefs.cgi?tab=email -- ## List details at http://lists.exim.org/mailman/listinfo/exim-dev Exim details at http://www.exim.org/ ##
