Sandy Drobic wrote: > > When I started learning about MTAs I tried to understand Sendmail and gave > up when even the documentation and how-tos sounded like so much gibberish > to me. Postfix on the other hand is documented very accurately. How long > did it take you to get a grip on the basics of QMail? > Oh, our "look" at qmail was much more high level, we didn't invest the time required to get a grip on it. It was research, and then saying for each of our main functions "OK, we do this in sendmail, how can we accomplish the same thing in qmail?" > >> details we didn't like - mail queue files were referenced by inode >> number, so if we ever had to recover from a disaster, guess what? >> different inode numbers, and we're hosed. Also, we had thousands of >> aliases and redirects which change daily - postfix and sendmail easily >> handle this, but qmail seemed a bit more awkward to configure. >> > > How were the lookups done, LDAP/SQL or flat files? What were the symptoms? > Lookups are done from local db files for optimum speed. The files are updated several times a day with automated scripts, but we need our mail gateways to be blazing fast, so the potential delay in waiting for ldap response from a remote lotus notes server running on windoze was unacceptable to us. Now that notes is being moved off of windoze and onto a p-series running AIX we may revisit that, but the current system works well. > > Yes, Postfix as well as QMail were developed out of need for secure MTAs, > as I just read on http://cr.yp.to/qmail.html. Wietse does take care not to > introduce features that waste resources. Probably one of the reasons whey > Suse changed to Postfix as the default MTA. > > Thanks for the view of a (previous) Sendmail user. Did you have a look at > Exim as well? When I took a casual look at their documentation it seemed > quite nice. >
We looked at exim, and it seemed to have some nice features - but we need to get the maximum mail throughput and minimum latency possib;e, and postfix was far and away the performance winner. BTW in researching benchmark results, I was unable to find any evidence of qmail's purported performance advantages over sendmail. Joe -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
