RG You are doing great on digging. Waiting for your results. CB In a message dated 5/1/2014 12:11:33 P.M. Eastern Daylight Time, xgeorge@xxxxxxx writes: I ran across this a few minutes ago and will do more digging. RG Yahoo & AOL introduced a feature (DMARC) this week that basically says "If a message has a yahoo.com or aol.com email address as the FROM address, and it didn't come from a Yahoo.com server, then it's not acceptable." This is causing a LOT of problems with mailing lists. On 5/1/2014 8:50 AM, (Redacted sender _Sblumen123@aol.com_ (mailto:Sblumen123@xxxxxxx) for DMARC) wrote: RG Also I don't know where _dmarc-noreply@f_ (mailto:dmarc-noreply@f) ... comes from??? CB