I guess we're kind of lucky. Our ISP filters all our mail before delivering it to our Exchange server AND he doesn't charge us for it (makes sense if you think about it - he's saving bandwidth as much as we are). I don't know of all the rules he uses but there are two: reverse DNS lookup and checking the HELO greeting against the RFC. If the mail fails either one it never comes across the wire to his server.
A messed up reverse DNS does not mean it's spam. I've seen way to much spam from sources with good reverse DNS, still spam. I rather trust procmail on Linux to filter, I can take a look at the spamsuspect box and kill all the spam. At least I don't loose business and my customers are happy too.
Needless to say we have a number of irate parents who complain that they can't get mail through but in EVERY case it was a misconfigured email server on their end.
Good point! But not clever in a business enviroment.
B.
_________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED]
