On 09/01/2018 12:52 AM, Dave Horsfall wrote: > Hmmm...  Looking at my reject log, I see this: > >     Date: Aug 31 17:09:49 (w7V79WBG017201) >     from= >     relay=[208.45.186.204] >     reject=550 5.7.1 ... Fix reverse DNS for > 208.45.186.204 > > Would that be it? Yep, that's it. > I have some vicious spam defences here, and requiring rDNS (anything will > do) is one of them; I could always whitelist the IP if it won't change, > or perhaps chivanet.org if that will be the origin. I think that JPW was going to email you directly (reply to the message I sent you). TL;DR: His T1 upstream won't play ball. I added an entry to my hosts file and things have been fine for me. -- Grant. . . . unix || die