[Discuss] Stalwart E-mail; Was: Re: SSH options

[richard.pieri at gmail.com (Rich Pieri)]

On Fri, 23 Jan 2026 08:56:13 -0500
markw at mohawksoft.com wrote:

> You might be able to get away with it on, say, NFS, but only if you
> enabe locking. Simultaneous access to data from multiple writers is a
> complex problem and iscsi doesn't manage any of it.

Even with locking, NFS will be problematic. You have machineA and
machineB mounting a NFS share with your mail store, and let's say
you're using Dovecot because I know it stores index files in the
Maildir directory.

If you have locking enabled and you try to simultaneously run mail
programs on both machineA and machineB, one will hang waiting for the
other to release the locks on these index files. If you don't have
locking enabled then the two concurrent instances will trash each
other.

There are ways to make it work but the most sane is "don't put mail on
NFS".

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