I got in contact with Barracuda and they don't actually use msrbl.net. They do however allow their customers to specify additional blacklists should they want to and from what I'm seeing, some of their customers do use msrbl.net.
Best, Nick Schafer Deliverability Engineer, Mailgun <http://www.mailgun.com/> On Thu, Jun 13, 2019 at 8:09 AM Kevin A. McGrail via mailop < mailop@mailop.org> wrote: > Hello All, > > Trying to reach someone at Barracuda to escalate this issue to them. This > morning we received this complaint: > > > <<< 550 Service unavailable; Client host [intel1.peregrinehw.com] > blocked by > > combined.rbl.msrbl.net; 38.124.232.10 (redacted:blocked) > > 554 5.0.0 Service unavailable > To my knowledge that is caused by a combination of three things: > > 1 - *That RBL is no longer running. * > https://www.dnsbl.info/dnsbl-details.php?dnsbl=combined.rbl.msrbl.net > has a good description. [1] See http://www.msrbl.com/check-db > > 2 - Domain squatters have taken over the domain msrbl.net and are giving > out positive responses for things. > > 3 - People who have configured their spam gateways to use that RBL will > get all kinds of problems. It appears to me that barracudanetworks.com > is using it. > > I've opened ticket 03269004 with Barracuda to try and let them know and > get the word out. > > But for everyone else on the list, if you are querying msrbl.net, it's > effectively not working. I won't say compromised because I think it's just > for sale on sedo so they are giving positive queries for a wildcard > record. > > Regards, > KAM > > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop >
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