It is a good idea to reject likely to certain spam, because in the rare cases of false positives the legitimate sender will be notified. It is also a good idea to have at least as good spam protection at the (forwarding) secondary MXes as at the primary. But what is the best way(s) to handle .forward-ed mail coming from friendly but slightly stupid (in the sense that they lack adequate spam protection) hosts, and how do you implement it with Exim?
a) Don't care; it's their problem if they can't identify spam as well as we can! Or, in other words: We shouldn't do anything, because it will cost us money and give us nothing but more spam in return. b) Whitelist well-known providers (which should have adequate spam filters but there is always some mail that will pass through one filter but not the outher). c) Monitor mail logs to identify forwardings automatically or manually. d) User-managed ~/.backward (or a database or whatever) containing addresses and/or hosts forwarded from. Disscuss, please! -- Magnus Holmgren
pgp2cnA7uZhwb.pgp
Description: PGP signature
-- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
