I'm looking for a way to change the default destination port for SMTP, similar 
to the effect of lmtp_tcp_port.

This is due to an interesting outbound NAT setup, which will rewrite the actual 
connection port  for the destination hosts to be 25.

The smtp(5) command doesn't have an option to set default port.


Is there any way to do this?


One option that came up was to use a RegExp for a transept, but: 

You can't use a regexp for transport, because trivial rewrite will ignore the 
$1, due to safety issues:
/(.*)/  smtp:$1:2501

The last time the trivial rewrite regexp issue came up, the response was to use 
2.2, since it still allowed this. This is for internal mail server use, with 
traffic generated by trusted hosts.

---

BTW- Yes, I mean destination port.  No, I don't mean SMTP inbound listening 
port.  


Matthew Barr
Technical Architect
E: mb...@snap-interactive.com
AIM: matthewbarr1
c:  (646) 727-0535

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