In message <4460F123.6010901@???>, Marc Perkel <marc@???>
writes
>Just wondering how to do this. I'd like to test to see if the sending
>host at port 25 open. Would this be a good way to detect spammers?
no, it would be dumb
> Would
>a host sending email to my host not have port 25 open to receive email?
too many negatives there for me to parse, so I'll make a firm statement
"the world is full of machines that are legitimate senders of email
which do not accept incoming email on port 25"
- --
richard Richard Clayton
Those who would give up essential Liberty, to purchase a little temporary
Safety, deserve neither Liberty nor Safety. Benjamin Franklin 11 Nov 1755