553 Message rejected - see http://dnsbl.invaluement.com
Just tried to reply to a supplier I'm looking to order some items form only to have the e-mail returned from email@example.com with the following error message:
553 Message rejected - see invaluement Anti-Spam Blacklist, a DNSBL or DNS Blacklist | ivmSIP, aka "rbl" | ivmURI, a uribl like surbl.org
We've been using these suppliers for a few years now and today out of knowwhere this strange error message is coming up!
Anyone got any ideas as to why it's being rejected? I'm not sure if it's the EMBC side or the suppliers side but seeing as the e-mail was coming from firstname.lastname@example.org thought I'd try here first :)