On Thursday 15 December 2011 15:50:42 Duane Hill wrote: > 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;
Not your host ... > > http://bbl.barracudacentral.com/q.cgi?ip=mydomainIP)". ... but blocking because of your IP address > > The Barracuda is looking at the sender IP (mydomainIP) instead of > > the relayhost IP. > > > > Is there another way to run a mailserver? Sounds like you are doing it right. If you were to try to send mail using your ISP-provided address to this place, they'd probably block that as well. > > 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. Barracuda "Deep header parsing" is a disaster. A large percentage of legitimate mail from end users on dynamic IP addresses (most people are in that group) will be blocked. -- Offlist mail to this address is discarded unless "/dev/rob0" or "not-spam" is in Subject: header
