19 Feb
1998
19 Feb
'98
12:48 p.m.
John R Levine writes:
Are there any routers currently available that can do port 25 spoofing for dialup users? That is, when the user attempts to connect to port 25 anywhere, he in fact connects to port 25 on your own SMTP server instead.
In case it's not obvious, it's for spam management.
It seems simple enough to block all outgoing SMTP to anything but your own server, and to apply such a filter on your dialups. I don't know if the more complex solution you propose is worth it -- the users will quickly learn where they should aim their mail... Perry