 I usually try...
try to contact the mail admin if the rejected e-mails are important. Most of the time they are receptive. I'll even make reference to MS's Exchange documentation explaining the issue and how to configure Exchange. Some of the responses get comical as to why they don't have it configured properly. This isn't the place to go into detail but suffice it to say some admins are sorely lacking.
Since this check blocks about 80% of the spam I keep it in place. I have on occasion setup a bogus zone file on my DNS server for temporary communications to provide the admin with the RFC's and link to documents on how to correct their server. Most admins will fix their server after reading the RFC's. I've even gotten phone calls from company owners asking why I'm rejecting their mail. After I quote RFC's and their admins have always changed their HELO response.
I am a firm believer that the Internet would be a better place if the rules were followed. So I leave the checks in place. Fortunately, my company's owner believes that as well and he has never asked me to relax the settings. He'll request a fax from a company that won't comply with the RFC's before he'll ask me to change it. Those RFC's are in place for a reason.  |