Matthew Seaman wrote:
Rob wrote:
That closed port 25 on the extra NIC, but netstat still shows "tcp4
*.submission LISTEN".  I definitely need to close port 587 in the 2nd
NIC, but I was wondering about "best practices" for this.  Shouldn't the
submission thing ONLY be on the localhost IP?  I'm thinking I can use:

You also need:
otherwise, you're definitely heading in the right direction.

Thanks, Matthew!  That was the piece I was missing.  I tried my Daemon_Options 
above, but found out its presence does not disable the default config to listen 
on all interfaces.  I got it working by directly editing the .cf, but your 
trick does it from the macro config.

The final result ended up as:
FEATURE(no_default_msa)dnl  # turn off MSA on all ports; only ue what's in 
DAEMON_OPTIONS(`Port=2525,Addr=,Name=MTA')dnl  # smtp on alt port

Once I knew the right keywords to google, I found this article that might be of use to 
others:  "Five Tips for a Better sendmail Configuration"

 -Thanks,  Rob
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