[Info-vax] TCPIP port 587 (was Re: Problem with SMTP)

[JF Mezei]

RLFitch wrote:
> More information, I hope it's useful:
> 
> If I attempt to Telnet to a SMTP server (port 25) on the new system
> the connection fails but on the old system a connection is successful.

You have a firewall which prevents outbound connections to outside SMTP
servers, unless it comes from an approved IP. Your new server is likely
not in that list of IPs that cam make outside conncetions to 25.