said by TheBigCheese:Don't know about "no notice" as I received several snail mails about this. I do have a reason to want 25 open as my Netgear router sends logs over port 25 and there is no way to change the port number! I guess the only solution is to use a VPN but I don't see that the cost is justified (I'm cheap).
If you have Windows [XP|Vista|7] Professional, then you have IIS, which includes a mail server. So set up IIS, and point your Netgear to 127.0.0.1:25. IIS SMTP will relay (so be certain to secure it against unauthorized access), and it can be configured to use any TCP port to send. So configure the server to use port 465 of whichever e-mail service you use.
And if you don't have the Professional version of Windows, there are free SMTP server applications which will run as a service, and do the same thing.