On Tue, 21 Aug 2001, Marc Haber wrote:
> ROUTER:
> fail_percent:
> driver = domainlist
> local_parts = ^.*%
> route_list = "* localhost"
> self = local
>
> What I am now experiencing is that sometimes, when an e-mail comes in
> with % in the _header_ sender, the receiving exim process starts
> eating CPU and memory. Stracing the exim process shows a lot of name
> server operations for localhost. When I comment out the router, the
> mail goes through fine.
If you use
route_list = * 127.0.0.1 byname
it won't want do name server lookups. But you need an exim -d9 to see
why it's doing lots of them per message.
Incidentally, in Exim 4 it will be much easier to lock out addresses
containing %. So much so that I've included it in the default
configuration (also @ and /).
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
