On 02/12/2013 03:50 PM, Brett Bump wrote: I'm not sure what the routing issue are with *Comcast*, however Johnny is right about them not having "some" access to the rest of the internet. We have been blocking email access FROM *Comast* for years because of all the spam that comes off their network. My last access edit for CMCS was: -rw-r--r-- 1 root wheel 6958 Apr 20 2008 CMCS # CMCS Comcast Cable Communications, Inc. #------------^------------------v--------------------------------------# 24.126 550 Spam not wanted (CMCS) <snip> I block 115 class B subnets from them (that's 7536640 IP addresses). Are you differentiating AT ALL between their consumer connections and their business connections? If not, that's a really bad idea. That said, my mail server handles about 100 users and 24 domains, most of which are businesses. It moves, on average, about 6500 messages per day. Not being able to email Peter directly is the first issue I've had in a year and a half of having this connection. So, I am forced to ask: WTF? -Dave -- Dave McGuire, AK4HZ New Kensington, PA