Procmail: how to deliver email over an ssh-tunnel to my smtp server.

[Rob]

Rob wrote:
> Hello,
> 
> I'm having 4.11 and 5.3 FreeBSD PCs.
> 
> All incoming email arrives through fetchmail (using
> imap protocol).
> 
> I then filter all email with procmail, which is
> configured such that it
>    trashes spam, or
>    delivers to local mailbox, or
>    forwards to another external address.
> 
> For external delivery, I have set up an ssh tunnel
> to my smtp server:
> 
>  ssh -N -f -L 2525:localhost:25 smtp.server.it
> 
> What do I have to do next, to have the delivery
> work properly?
> 
> Can I tell procmail to push the email directly onto
> the port 2525 of the ssh tunnel?
> 
> Or do I have to reconfigure sendmail for this?
> (sendmail reconfiguration info looks like a
> nightmare to me though....).
> 
> Do I have other options?

I'll answer my own question here, just for the record.

Use msmtp, which is highly configurable, for example
defining its own outgoing port.

In the .procmailrc file I only need to add:

   :0
   | /usr/local/bin/msmtp email at address.com

to forward the email with msmtp, over my own ssh
tunnel port.

Works like a charm.
Rob.


		
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