clearly the issue
nslookup imrics.net gives me your 216.X.X.X address, nslookup of the 216 address gives me your provider. As an ISP I may assign weight to that fact. Warhead tho appears to be a stickler because they host lists and do not want to be accused of third party manipulation of their handled lists they are very strict. Now do you get the same effect with a sciantastic message to warhead? Will they allow one list to get sent to another without reverse dns? Curious.
In another note I suspect that within 2 years all mail which fails reverse dns will be dropped on the floor. Best practice documents like
[link|http://e-com.ic.gc.ca/epic/internet/inecic-ceac.nsf/en/gv00329e.html|http://e-com.ic.gc.c.../en/gv00329e.html]
section 11 pertains to you.
The industry is trying to regulate itself before government does it for us and the document above is being looked at very carefully by all providers.
HTH,
Bill
Any opinions expressed by me are mine alone, posted from my home computer, on my own time as a free american and do not reflect the opinions of any person or company that I have had professional relations with in the past 50 years. meep