W. Michael Petullo:
> > If in doubt, RTFM?
> > 
> > queue_minfree (default: 0)
> >        The minimal amount of free space in bytes in the queue file system 
> > that
> >        is needed to receive mail.  This is currently used by the Postfix  
> > SMTP
> >        server to decide if it will accept any mail at all.
> > 
> >        By default, the Postfix SMTP server rejects MAIL FROM commands when 
> > the
> >        amount of free space is less than 1.5*$message_size_limit (Postfix 
> > ver-
> >        sion  2.1  and  later).   To specify a higher minimum free space 
> > limit,
> >        specify a queue_minfree value that is at least 
> > 1.5*$message_size_limit.
> 
> I did indeed read that. What puzzles me is that it seems my spool
> filesystem seems to have plenty of space. My root filesystem does not,
> but as I understand things that should not matter.

What is the output from

        df -k
        postconf queue_directory message_size_limit queue_minfree

on the Postfix machine?

        Wietse

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