Okay, for all ya other IT Administrators out there, there has cropped up this new pain in your ass, which I’ve just recently discovered in that you might get this as a failure for a message you send:
“Remote host said: 554 5.7.1 The server sending your mail [220.127.116.11] does not have a reverse DNS entry. Connection Rejected. Please contact your Dial-Up/DSL/Network ISP Provider. Default Reject!”
Now, this most assuredly sucks, since it is a tight constriction on the email server at the other end. Why on earth would someone do this? Simple answer really, in that people want to block spammers. But, the truth of the matter is, it doesn’t block spammers. I don’t know what two bit IT hack set this one up, but it has me really cheesed off, since there are a few people out there that have actually set up their servers this way and it’s causing my users all kinds of heartache.
There is a solution though, which I have in action. That is to get reverse DNS working for my email server. Naturally, it works on the inside network, but now, thanks to some genius I have to have it working outside as well. I’ve got it in progress both with my domain name registrar who provides it for $6 a year and with my internet provider which just provides it because they have to. Hopefully, between the two of them, I’ll have all my bases covered.