Luis Daniel Lucio Quiroz schrieb: > Hey Robert > > I know, amavis is the best antispam machine for SA+Clamv, but I have a little > box, 256MB or ram and no swap (dont ask why). There for, because amavis is > running under perl, it use alot of memory and then I'm having pipe errors. > > I've found how to use SA+CLAM+Postfix without Amavis. However, just for > informative reasons I'll explain you why I wont use milters. > > Because postfix arch. email flux is like this: > -> pre-queue filtering -> postfix filtering (queue) -> post-queue filtering -> > > This suggest that all email is got first by pre -queue filtering. This is > not > useful for heavy-load boxes because if you set this SA as a milter (postfix > only supports milters in pre-queue) then SA will get 100% of load.
true in general, but if you have 256MB you wont use this for heavy load boxes, and i found its generally to small mem for spamassasin > > I rather prefer to set it in post-queue (i got using pipe at master.cf) > because, postfilx filtering (such as helo restriction, fqdn restrictions, > client restrictions, including rbl - but i'll use this in SA-) could be > applied first and then SA only will get 60% of all mails. In many > installations I've set, I stop much spam using helo-fqdn restriction > therefore > SA and hole machine have a low load. Postfix basic filtering it is much > faster and cheaper than SA's. true too, but i have several milters on heavy weight boxes and no problem with it and there are milter for rbls/helo check etc too ( which i didnt tested ), in my mind there is only one danger that might apear , if some milter checks takes longer then a client wants to stay connect, but this is mostly a problem of bot clients not of real mailservers so special with spamass you might use timeout options in spamass-milter and in spamd for i.e with network test, but there is on big feature, you can use rejecting spam by defined spam level ( also from sasl users ) before it can be delivered in on smtp level, same works with clamav-milter , rejecting virus on income smtp level is very sexy, i think, so perhaps this overides the cheap factor of pure postfix rejects, so you might use clamav-milter and if you dont need seperated users_pref you can use spampd ( i use this on backup mx servers ) which is perl and after queue, but not complex as amavis but no need to flame , i only can tell about my reality which shows best results with clamav-milter, spamass-milter, dkim-milter of course i am using other postfix restrictions massivly too after all milter is a sendmail code i believe related to the quality and mech of the code of used milters it safe too use them, if i ever would have load problems i simply would use backup mx, or load balancing , better hardware etc > > > :-D > > On Tuesday 16 December 2008 18:26:09 Robert Schetterer wrote: >> Luis Daniel Lucio Quiroz schrieb: >>> Is there any direct way to make SA and clamav talk thour it clam.socke >>> file? >>> >>> I want to avoid amavis or mailscanner >>> >>> :) >> Hi, >> i use clamav-milter and spamass-milter with postfix >> 2.5.5 without any Problems >> this does the urgent jobs af spam and virus filtering >> but amavis has much more functions then this > > -- Best Regards MfG Robert Schetterer Germany/Munich/Bavaria
