On 22/10/2010 12:13, Terry wrote: > Hi one of customers who sends email out via our server using asmtp is having > his email blocked by a barracuda system. > But they are blocking it based on his address rather than our smtp server > which is not black listed. > > 2010-10-22 09:58:17 1P9DR3-000I43-DY ** [email protected] > F=<[email protected]> R=dnslookup T=remote_smtp: SMTP error from remote > mail server after end of data: host smtpmail.ead.ae [195.229.40.150]: 554 > Service unavailable; Client host [ns0.1stkmh.co.uk] blocked using Barracuda > Reputation; http://www.barracudanetworks.com/reputation/?r=1&ip=86.170.248.224 > 2010-10-22 09:58:17 1P9DR3-000I43-DY Completed > > Must be a configuration error some where just not sure if it is the clients > end our mail server or the Barracuda system
Does Barracuda recommend that their list is applied against received headers, or against the connecting IP only? If the former, then it's either they're blocking that mail on purpose because your client is sending spam, or it's a false positive and Barracuda should be contacted. If it's the latter, then the mail server you're connecting to either has a broken configuration or a questionable policy regarding who they use Barracudas blacklist. I'd suggest contacting both Barracuda and the destination mail server admin and asking them for delisting/whitelisting. If that's not fruitful, one technical solution on your end would be to remove/obfuscate the IP address of the client in the received headers. GMail is one example of an email provider who removes the clients IP address when sending email. I can't remember if they do that for both SMTP and Webmail submitted messages, but they definitely do it for at least one of them -- Mike Cardwell - Perl/Java/Web developer, Linux admin, Email admin Read my tech Blog - https://secure.grepular.com/ Follow me on Twitter - http://twitter.com/mickeyc Hire me - http://cardwellit.com/ http://uk.linkedin.com/in/mikecardwell -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
