On Thu, 2010-04-22 at 20:54 -0400, Chris Meadors wrote: > On 4/22/2010 8:37 PM, Ted Cooper wrote: > > > Unfortunately, it's very hard to tell the difference between a > > callout and a bounce at rcpt time. > > If you do still get a lot of backscatter (I've not seen much these days, > admins do seem to be getting a clue), you should look into BATV signing > your outgoing messages. Then it is very easy to differentiate between a > callout/valid bounce, and forged backscatter.
Unfortunately, I can't do BATV in all these cases as I am not always responsible for the outbound queue. Now days I usually only run the inbound mail filtering. The server in question here is one of the last ones standing from the way I used to run things. At some point it became impractical to run so many separate filtering servers, each with its own setup. The outbound email is now managed in house. I could certainly encourage the in house setup to be changed, but it can't be guaranteed for all and so I'm stuck without it. -- The Exim manual - http://docs.exim.org -- ## 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/
