[CentOS] Message size rejected

Fri Jul 4 06:38:12 UTC 2008
Anne Wilson <cannewilson at googlemail.com>

On Thursday 03 July 2008 22:33:34 Craig White wrote:
> On Thu, 2008-07-03 at 22:25 +0100, Anne Wilson wrote:
> > On Thursday 03 July 2008 22:12:10 Craig White wrote:
> > > On Thu, 2008-07-03 at 22:06 +0100, Anne Wilson wrote:
> > > > My daughter needs to send me a large file.  It appears that it is
> > > > getting through my ISP, but being rejected on my CentOS mail server. 
> > > > The message she's getting says
> > > >
> > > > A message that you sent could not be delivered to one or more of its
> > > > recipients. This is a permanent error. The following address(es)
> > > > failed:
> > > >
> > > > anne at localhost
> > > >   SMTP error: 552 5.3.4 Message size exceeds fixed limit
> > > > Reporting-MTA: dns; borg2.lydgate.lan
> > > >
> > > > I presume that this is a configurable limit, but I'm not sure where
> > > > to look. Since it says MTA I'm thinking that it's probably postfix. 
> > > > Can someone please tell me what parameter I'm looking for?  Thanks
> > > >
> > > > I have reams of documentation printed out.  I'll start wading through
> > > > that tomorrow, but time is of the essence with this one.
> > >
> > > ----
> > > # grep size_limit /etc/postfix/main.cf
> > > message_size_limit = 2560000000
> > > mailbox_size_limit = 5120000000
> >
> > So 'size_limit' is what I'm looking for.  Thanks everyone.  Now comes the
> > really hard bit.  I have to tell her, blindfolded, how to tell the size
> > of the message she is sending.  She uses btinternet's yahoo mailer, and I
> > haven't a clue what she can see there.  :-(
>
> ----
> get 'properties' (usually a right click on the file) of the file she's
> attaching
>
I've already told her that I'll settle for that, but I'll have to guess 
the 'overheads'.  I know that to attach a 50k file, for instance, raises the 
size of the message by a lot more than 50k.

Anne