Dave Restall - System Administrator,,, wrote: > I use exim to receive and process my emails - have done for years. > I also use sender callouts - have done for years. Occasionally emails > get rejected because they are sent from non-existent addresses and sender > callouts don't like that.
You'll get quite a bit of hostility from various net denizens for using callouts "globally". Infact there are a couple of blacklists which add anyone using "unauthorized" callouts and several people have been vocal about the issue on the Exim users mailing list. Personally I cannot see what all the fuss is about, but have learnt in the past (as Graham has already suggested) that it is best used ONLY on domains for which you have authority (such as a backup MX calling forward to validate if an email exists on your primary MX - which admittedly is in the call forward (not call back) area). There are much better tools for filtering out unwanted traffic (spamassasin virus checkers, blacklists, dkim yada yada) and unlike sender callouts you won't be subject to arbitary banning or senarios you are facing with PlusNet. The simplest fix for this is exempt PlusNet from your callouts, the more recommended way is to disable callouts fro all but your controlled domains and use other filtering methods. Regards D. -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
