On Thursday, December 15, 2011 at 21:41:51 UTC, bjloc...@lockie.ca confabulated:
> I run my own domain off a dynamic IP but all my postfix uses relayhost set to > smtp.myisp. > This works 99.9% of the time but I have encountered two recipients > who use Barracuda's that block email from my domain. > The bounce includes "(reason: 554 Service unavailable; Client host > [smtp.myisp] blocked using Barracuda Reputation; > http://bbl.barracudacentral.com/q.cgi?ip=mydomainIP)". > The Barracuda is looking at the sender IP (mydomainIP) instead of the > relayhost IP. > Is there another way to run a mailserver? > Is there a standard I can read? My guess, whoever is running the Barracuda appliance has the deep header parsing option turned on and should turn it off. -- If at first you don't succeed, so much for skydiving.