[vchkpw] vdelivermail slow delivery (too much...)
I'm experiencing problem setting up a mail server with qmail+vpopmail+mysql. The hardware is a Compaq Prolian 7000 whith 1.5 gb RAM and RAID 5 storage (100 gb). There are 2 partition (both ext3) / and /var. qmail and vpopmail are installed in /var. The mail server has about 200 hosted domain but only one is big. This one has about 20k mail accounts. The problem is that when qmail delivers mail (via qmail-local-vdelivermail) to small domain, the time elapsed is small. When it delivers mail to the (only) big domain the operation is really long. Is seems that vdelivermail spends a lot of time delivering the mail. Just for example: a mail to a little domain takes 1 sec (at most) to be delivered, a mail to huge domain takes more than 60 sec. These test have been done using 3 conncurrent local delivery agent. I tried to move (only for testing) the vpopmail's directory of big domain to a tmpfs partition and times reduced to about 10 secs. The problem shouldn't be of mysql. Any idea? May be the storage too slow? Do famd and courier-imap impact on system' performance? Thanks Luca ICT Made Easy N.C.E. Network Consulting Engineering srl http://www.nce-ict.it
[vchkpw] Greetings, some help please?
I got it working, sort of. Went through the whole thing, fired up the new smtpd and find that while chkuser IS functioning, it's just not WORKING. I'm just running a basic qmail 1.03 install. No vpopmail, no fancy stuff. In the following text, the rcpt to [EMAIL PROTECTED] should bounce. But it doesn't. my .qmail-default for the general mail server (affecting all domains) has nothing but the string # bounce-no-mailbox' in it but it just doesn't catch. ltaica:/var/qmail.new/bin# ./qmail-smtpd 220 altaica.tigerknight.org ESMTP mail from: [EMAIL PROTECTED] 250 ok rcpt to: [EMAIL PROTECTED] CHKUSER accepted rcpt: from [EMAIL PROTECTED]:: remote :unknown:unknown rcpt [EMAIL PROTECTED] : found existing recipient 250 ok rcpt to: [EMAIL PROTECTED] CHKUSER rejected relaying: from [EMAIL PROTECTED]:: remote :unknown:unknown rcpt [EMAIL PROTECTED] : client not allowed to relay 553 sorry, that domain isn't in my list of allowed rcpthosts (#5.5.3 - chkuser) quit 221 altaica.tigerknight.org
Re: [vchkpw] vdelivermail slow delivery (too much...)
The hardware is a Compaq Prolian 7000 whith 1.5 gb RAM and RAID 5 storage (100 gb). There are 2 partition (both ext3) / and /var. qmail and vpopmail are installed in /var. The mail server has about 200 hosted domain but only one is big. This one has about 20k mail accounts. Aha! Problem probably found! I have had similar problems with large mail accounts on ext3 partitions. Above some number of files (which I've never bothered to find out), server load goes through the roof and delivery slows to a crawl. I suspect you have one or more users with thousands of files in their maildir -- possibly a postmaster account set to catch-all (which is dangerous), that is never checked and is full of spam. Move your maildirs onto a parition formatted with a filesystem better suited to large numbers of files in directories. Reiserfs is liked by many and is frequently recommended by others on this list. I use XFS myself, mainly due to its very nice backup/dump tools. -Bill * Waveform Technology UNIX Systems Administrator
Re: [vchkpw] Greetings, some help please?
I got it working, sort of. Went through the whole thing, fired up the new smtpd and find that while chkuser IS functioning, it's just not WORKING. I'm just running a basic qmail 1.03 install. No vpopmail, no fancy stuff. This is a very common problem, but you posted to the vchkpw list, which is FOR VPOPMAIL. You need to post to the qmail list for qmail-specific questions that are unrelated to vpopmail. A hint though: you probably need selective relaying. Read about tcp.smtp, SMTP-Auth, and possibly the older method of roaming users support with POP3 (check-before-send). -Bill * Waveform Technology UNIX Systems Administrator
