On Tue, 13 Sep 2005 12:45:29 +0100, Jeremy Harris <[EMAIL PROTECTED]> wrote: >Marc Haber wrote: >> which will return (modulo bracketing and other syntax errors) the >> second field of any line (the first line?) in /etc/exim4/passwd.client >> for whose first field exists an A record pointing to the IP address of >> the we are actually talking to. > >I suspect you'd find that to be too many A-lookups to be doing, >even with a local DNS cache.
Bear in mind that we are looking for a smarthost here, so it is only one host name per exim, which will at most have ~10 A records for a _very_ big ISP, and these A records would be cached pretty fast. I suspect that a passwd.client file with more than 20 entries would be _extraordinary_ exotic. Additionally, I sincerely hope that exim caches auth credentials once obtained. Greetings Marc -- -------------------------------------- !! No courtesy copies, please !! ----- Marc Haber | " Questions are the | Mailadresse im Header Mannheim, Germany | Beginning of Wisdom " | http://www.zugschlus.de/ Nordisch by Nature | Lt. Worf, TNG "Rightful Heir" | Fon: *49 621 72739834 -- ## 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/
