nanog mailing list archives
Re: pop server in an ISP environment
From: ww () shadowfax styx org
Date: Fri, 26 May 2000 13:31:26 -0400
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"John" == John Butler <john.butler () netrail net> writes:
John> Thus spake Muljawan Hendrianto John> (muljawan.hendrianto () siemens com sg): >> Another issue is high availability, does any body use server >> clustering in an ISP environment? I am thinking about having a >> Sun Cluster for these pop servers, but will I need a special HA >> agent ? John> Stick a bunch of them behind a server load balancer like a John> Foundry ServerIron or an F5. Then you don't have to worry John> about who the server vendor is. Then you can use FreeBSD John> boxen for the servers and save a chonka dough. A solution that is cheaper yet is to have the servers speak a routing protocol and announce their presence into it that way (see the recent "IGPs and services?" thread on this list). You can do it all with free software and commodity hardware. The big issue here is the back end -- if users may connect to, say, one of four pop3 servers to read their mail, the /var/mail filesystem had better be shared in some way. The easy way to do this is with NFS, but if each of the pop3 servers has a 100Mb ethernet card in it it could easily swamp an NFS server. Perhaps some way to have multiple mail spool filesystems -- foo and bar's mail spools are /var/mail/f/foo and /var/mail/b/bar where /var/mail/(f|b) are separate filesystems mounted from different NFS servers. Cheers, - -w - -- Will Waites \________ ww () shadowfax styx org\____________________________ Idiosyntactix Ministry of Research and Development\ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.1 (OpenBSD) Comment: Processed by Mailcrypt 3.5.5 and Gnu Privacy Guard <http://www.gnupg.org/> iQEXAwUBOS60xw4cK24IcAwYFAO0cwP/Upmh1qyDhjFRQzxCl8sCYlMbJt0xUT4q 7eNQ/D8iYZ/nEwIWzuHF2ru6GUtiKAFRsZ0sEjBobJTjAX1QCzdooA39K/6WXFps lt00St8aMoakjTPvwDbojLRN8x8L9NslYw/tmGQLZbF3B0RuH8UNMY7Es3ls14Ly clPiXgZFVp8D/1JMsQgFu16wKBmMSxD4JjXdY1lYsRx3E52WcoI8rcjvX9053XCC DFy/VSDYhtc+3SV8e+IX5UZf65fotDGEwLXrCUsLXHw7pRL75L5LYxa3uTxmzMWO nZpieAdG2uZt/ZNYOusTdVO4q6b3wGnbahqtB2D4aoRQljcuBfasgHc0 =5zKZ -----END PGP SIGNATURE-----
Current thread:
- pop server in an ISP environment Muljawan Hendrianto (May 26)
- Re: pop server in an ISP environment Jim Mercer (May 26)
- Re: pop server in an ISP environment John Butler (May 26)
- Re: pop server in an ISP environment ww (May 26)
- Re: pop server in an ISP environment Michael Shields (May 26)
- RE: pop server in an ISP environment Dmitri Krioukov (May 29)
- RE: pop server in an ISP environment Roeland Meyer (E-mail) (May 29)
- RE: pop server in an ISP environment Greg A. Woods (May 29)
- Re: pop server in an ISP environment Pat Myrto (May 29)
- RE: pop server in an ISP environment Roeland Meyer (E-mail) (May 29)
- <Possible follow-ups>
- Re: pop server in an ISP environment Shawn McMahon (May 26)
- Re: pop server in an ISP environment Peter van Dijk (May 30)
- RE: pop server in an ISP environment Roeland M.J. Meyer (May 30)
- Re: pop server in an ISP environment Dave Crocker (May 30)
- Re: pop server in an ISP environment Steve Sobol (May 30)
(Thread continues...)