[Exim] repost: director options: what is faster?

Maybe I should ask differently: does exim treat syntactically different
conditions/lookups different with regard to internal expenditure? Which
constructs behave faster, use caching, etc. ?

I would indeed appreciate an answer or a pointer to related documentation.

Volker




Hello,

For some domains I use a MX with amavis. Now I added the "normal" MX as a
fallback in the DNS. An application creates a table of domains that have
to be scanned. In case of the amavis host being unavailable, mail shall be
queued for delivery to the (resurrected) amavis host before local
delivery. Therefore, I just set up (works fine):

reroute_virmail:
driver = smartuser
domains = ${lookup mysql {select distinct domain from avdomains where
domain like '${quote_mysql:$domain}'}{$value}}
condition = "${if eq {$sender_host_name}{MY_AVRELAY} {0}{1}}"
transport = avrelay_queue

and am now wondering if it's a difference to have the mysql lookup and the
condition in two different options. Should I better use one `if and {eq..
{eq.. ` statement? About 1/3 of domains get scanned.

Regards,
Volker
--
V. T. Mueller      UCC Freiburg, Germany     vtmue (at) uni-freiburg.de

             "problems are just opportunities in work cloth"