[Mailman-Users] Mailman and Postfix on different hosts?

Brad Knowles brad at stop.mail-abuse.org
Fri Oct 6 17:26:47 CEST 2006

At 5:01 PM +0200 10/6/06, Anders Norrbring wrote:

>  I'm thinking that maybe I can mount the mailman executable directory
>  from the webserver as a NFS share, and then run "as usual".

The Mailman developers have done a lot of work to try to make Mailman 
as NFS-safe as possible.  In theory, you should be able to put the 
entire /usr/local/mailman directory on NFS and share that from the 
web server to the mail server, and so long as you properly configure 
both ends that should "just work".

Of course, any time you put content on NFS and you have two different 
servers accessing that content, you have a number of additional 
issues and you have to make sure that NFS is properly configured to 
support that method of use.  In particular, you need to make sure 
that client-side attribute caching is turned off, among other things.

You also need to keep in mind that being dependant on an NFS server 
for this kind of operation will introduce a number of new types of 
failure modes (like everything appears to completely lock up if the 
NFS server goes away), and that unless you're spending a lot of money 
for a pretty high-end NFS server this will reduce your throughput and 
the overall reliability of the system.

Brad Knowles, <brad at stop.mail-abuse.org>

"Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety."

     -- Benjamin Franklin (1706-1790), reply of the Pennsylvania
     Assembly to the Governor, November 11, 1755

  Founding Individual Sponsor of LOPSA.  See <http://www.lopsa.org/>.

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