smtp server test?
wintermutecx at gmail.com
Tue Mar 15 19:46:04 GMT 2005
[ The following text is in the "ISO-8859-1" character set. ]
[ Your display is set for the "US-ASCII" character set. ]
[ Some characters may be displayed incorrectly. ]
On Tue, 15 Mar 2005 11:22:30 -0800, Scott Silva <ssilva at sgvwater.com> wrote:
> Joe Smith wrote:
> > Any sendmail experts know of a milter that will check an inbound
> > connection for a listening mail server? Gotta be 90+ percent of
> > spammers and virus connections don't have a listening smtp server.
> I'm not sure if RFC's require a sending SMTP to also be a receiver.
> Some large senders probably have separate sending and receiving mailers,
> and you would get some false positives.
> You could test for reverse-resolution, but there are a few legit.
> mailers that have that broken also.
I'm not a large corp, just a small NPO and we have 2 mail servers,
one inbound with Mailscanner and outbound on another IP/machine. So we
would fail that check also.
------------------------ MailScanner list ------------------------
To unsubscribe, email jiscmail at jiscmail.ac.uk with the words:
'leave mailscanner' in the body of the email.
Before posting, read the MAQ (http://www.mailscanner.biz/maq/) and
the archives (http://www.jiscmail.ac.uk/lists/mailscanner.html).
Support MailScanner development - buy the book off the website!
More information about the MailScanner