Zitat von Ow Mun Heng <[EMAIL PROTECTED]>: > Hi all, > > I'm curious on why I'm seeing more references to postfix (both here and > on googling) when setting up an email server (scalable/high > performance/etc). > > Michael Nguyen actually states that > "Postfix + LDAP just was plain faster under stress than Qmail + LDAP and > Sendmail + LDAP" > > I've read in another google find that postfix is at least 3x faster than > sendmail. > > I'm just wondering why that is.
General note on this : Dependant on the special configuration you are testing anyone of the MTAs can be the fastest. What seams to be the common baseline : - Postfix is designed to avoid sync writes as much as possible, so if your I/O system is the bottleneck (as most of the time is) Postfix should be the fastest. - Qmail has some drawback by the "one message per recipient" design if your bandwidth is limited and you relay many multi-recipient mails. - A careful sendmail/milter setup with a strong machine can be faster then Qmail/Postfix with traditional store/forward content filter. - Qmail and Postfix are considered more secure than Sendmail. - Postfix and Sendmail are more flexibel in adjusting to your sepcial setup. Your setup (speed of DNS, lookup maps etc.) have more influence than the difference beetween the MTAs. > > Can anyone shed some light? To find the definitive answer for your setup you have to test yourself. > > Also, I've heard that sendmail does not support maildir format natively, > but I've also heard that one can use procmail to deliver it into maildir > format. No Sendmail guru here, but if you use procmail you have lost on the performance comparsion ;-) Regards Andreas --- Cyrus Home Page: http://asg.web.cmu.edu/cyrus Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
