we're at z/OS 1.7 ... and I set:

  INBOUNDOPENLIMIT 0

in the SMTP config file ... which causes SMTP to not listen on port 25. 
which should be as good as "block the port" ...

and we're still able to send outbound messages ...

--Stephen




Hal Merritt wrote:
> I've been asked to look into killing the SMTP service. We are very heavy 
> users of XMITIP, but inbound email is blocked at the firewall. However, that 
> does not seem to be good enough and we need to 'block the port' on the z/os 
> host.
>
> I'm having trouble isolating a FM, and there is not much on this issue in the 
> archives that I can see.
>
> >From what I can see, the SMTP server is critical to what we are doing with 
> >XMITIP. But how would you 'block the port'?
>
> Please, no Redbook referances.
>
> Clues, anyone?

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