RE: [cobalt-users] NFS does not support sendmail ?

["Salman Siddiqui" <salman@xxxxxxxxx>]

What's the solution to POP3 server scaling? When an organisation outgrows
its pop3 server capacity, how do do they add another server to handle pop3
traffic to the same set of mailboxes?


-----Original Message-----
From: cobalt-users-admin@xxxxxxxxxxxxxxx
[mailto:cobalt-users-admin@xxxxxxxxxxxxxxx] On Behalf Of Larry Smith
Sent: Monday, April 12, 2004 3:58 PM
To: cobalt-users@xxxxxxxxxxxxxxx
Subject: Re: [cobalt-users] NFS does not support sendmail ?

On Monday 12 April 2004 14:33, Ted wrote:
> I was trying to move all of our media to one location , and was trying to
> NFS mount
> the media sendmail would be reading and writing to. Any doo's or don'ts?
>
> Anyone ever tried this on Raqs?
>

Bottom line - _do_not_ do this.....

Sendmail/deliver (more deliver agent than sendmail) require exclusive
"locks" 
to read/write data to / from the mailbox in question.  NFS does not do this 
well (or in some cases at all) and it will corrupt your mailboxes, give
loads 
and loads of "cannot open mailbox" errors, plus a few other interesting 
errors that will probably appear to have no relavence at all - but all track

back to "mail" being on an NFS mount.

  This works (nfs mounting mail areas) when using IMAP and / or software
that 
supports the "maildir" format (each message is written to a separate file 
under the users home directory into a "mail" directory - which also supports

mail folders and several other "features"

While I have not done this (tried NFS) on a Cobalt, I have done on several 
other *nix systems and it fails miserably with mailbox (pop3 style
mailboxes) 
but works sorta-kind-a-almost with maildir format.

-- 
Larry Smith
SysAd ECSIS.NET
sysad@xxxxxxxxx


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