nanog mailing list archives
Re: Scalable Mail solution with NAS
From: Valdis.Kletnieks () vt edu
Date: Wed, 31 Jan 2001 10:33:35 -0500
On Wed, 31 Jan 2001 10:13:40 EST, chrisb () kippona com said:
Is the number of mailboxes the key metric? What breaks sendmail + "a very big disk"? Isn't it the traffic?
The two biggest problems with very-high-volume servers and sendmail are: 1) You *really* need to use multiple queues and some sort of aging scheme, so mail backlogged for dead hosts gets out of your main queue. If a queue gets too full, Sendmail exhibits bad O(N**2) behavior in sorting/running the queue. 2) If you are serving mailboxes (as opposed to a Listserv-type machine where the mail *leaves*), what can kill you isn't the sendmail, but the local delivery program and POP/IMAP checks. You get enough bozo users who have set Eudora to check for new mail every 2 minutes, you'll get bogged down no matter HOW fast Sendmail itself is. -- Valdis Kletnieks Operating Systems Analyst Virginia Tech
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- Scalable Mail solution with NAS Patrick Hollowell (Feb 24)
- RE: Scalable Mail solution with NAS Jason Lewis (Feb 24)
- Re: Scalable Mail solution with NAS Mike Johnson (Feb 24)
- Re: Scalable Mail solution with NAS Kris S. Amundson (Feb 24)
- Re: Scalable Mail solution with NAS David Lesher (Feb 24)
- Re: Scalable Mail solution with NAS Neil J. McRae (Feb 24)
- Re: Scalable Mail solution with NAS Brian (Feb 24)
- Re: Scalable Mail solution with NAS Kris S. Amundson (Feb 24)
- Re: Scalable Mail solution with NAS Vadim Antonov (Feb 24)
- Re: Scalable Mail solution with NAS chrisb (Feb 24)
- Re: Scalable Mail solution with NAS Valdis . Kletnieks (Feb 24)
- Re: Scalable Mail solution with NAS Sebastien Berube (Feb 24)
- Re: Scalable Mail solution with NAS Lyndon Nerenberg (Feb 24)
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- Re: Scalable Mail solution with NAS Eric Sobocinski (Feb 24)
- Re: Scalable Mail solution with NAS Matthew Zito (Feb 24)
- Re: Scalable Mail solution with NAS Sebastien Berube (Feb 24)
- Re: Scalable Mail solution with NAS Neil J. McRae (Feb 24)
- Re: Scalable Mail solution with NAS Jim Mercer (Feb 24)
- Re: Scalable Mail solution with NAS chrisb (Feb 24)
- Re: Scalable Mail solution with NAS Matthew Zito (Feb 24)
- Re: Scalable Mail solution with NAS Adrian Chadd (Feb 24)
- Re: Scalable Mail solution with NAS Adrian Chadd (Feb 24)