> # host -t mx esenf.pt > esenf.pt mail is handled by 5 mx0.esenf.pt. > esenf.pt mail is handled by 10 mail.esenf.pt. > esenf.pt mail is handled by 1000 mx.fakemx.net. > > # host mx0.esenf.pt > Host mx0.esenf.pt not found: 3(NXDOMAIN) > > Not sure about the remote host's policy, but I guess this is the reason
Oh yes... maybe you are right. mx0.esenf.pt is a fake mx record that point to a dead ip (perhaps it's more appropriate to point to an real ip with the port 25 closed) and mx.fakemx.net is a free fake mx service offered by fakemx.org, that temporary reject with a "451 Try again later" message for anti-spam purposes. I try this well know trick many years ago, but sinceraly i don't know if it's really useful and efective. For now i removed from dns server the mx0 record, wait for propagation process of our updated domain name and then i will test if that solved the problem. Many thanks Paulo Almeida -- Escola Superior de Enfermagem do Porto Rua Dr. António Bernardino de Almeida 4200-072 Porto - Portugal Tel: +351 22 5073500 - Fax: +351 22 5096337 http://portal.esenf.pt -- ## 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/
