Hi to all thank you Tom I know where is the problem.
I have Colt Telecom by Internet provider, from two week ago, we have a packets lost with any site of italy. Colt not know because occurs but they know in where is the problem, they opened a ticket with Internet Italy, but they have not response from them. My dns is inside range of address that blocked and the smtp cannot consults my dns and reject de my mail, but only the smtp that do this comprobation. I have configure my dns outside my company. Regard -----Mensaje original----- De: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] En nombre de Tom Hendrikx Enviado el: jueves, 19 de julio de 2012 11:32 Para: postfix-users@postfix.org Asunto: Re: RV: problems again On 7/19/12 10:52 AM, Tomas Garijo (Click) wrote: > > > Hi to all I am Thomas. > > Here I have the same problem .... > > I have installed a new server this server ip other I is not a gateway, > not connect with Exchange, is a SMTP Server with mail box in it, I > send mail via roundcube > > I sure my DNS That it's ok, because i pass test for this. But the > mistake is again > <snip> > Jul 19 08:09:55 smtp3 postfix/qmgr[24256]: 1425F1C82FF: from=<test@e- > surland.com>, size=1473, nrcpt=1 (queue active) <snip> > Jul 19 08:10:13 smtp3 postfix/smtp[24368]: 1425F1C82FF: > to=<tor...@torbus.com>, relay=mx.torbus.com[62.149.128.72]:25, > delay=18, delays=0.06/0.03/0.13/18, dsn=5.1.0, status=bounced (host > mx.torbus.com[62.149.128.72] said: 550 5.1.0 c8951j03N1pFjQ201895pn > dominio non valido / invalid domain (in reply to MAIL FROM command)) <snip> When testing this with by hand, you get the same result: $ telnet 62.149.128.72 25 Trying 62.149.128.72... Connected to mxd4.aruba.it. Escape character is '^]'. 220 mxcmd03.ad.aruba.it bizsmtp ESMTP server ready HELO me 250 mxcmd03.ad.aruba.it hello [212.79.224.10], pleased to meet you MAIL FROM: <t...@e-surland.com> 550 5.1.0 c9211j03M0E4mr00192RZ2 dominio non valido / invalid domain quit 221 2.0.0 mxcmd03.ad.aruba.it bizsmtp closing connection Connection closed by foreign host. The answer to the MAIL FROM command takes very long, which indicates (to me at least) that the receiving machine has an issue with resolving the domain (e-surland.com). This does not happen when you send a MAIL FROM: <some...@gmail.com>, so it seems dependant on your domain. The postmaster at aruba.it has to check why that is happening: I see no issues with the dns entries for e-surland.com. You cannot give answers about the remote system yourself. If your client is important to you, and the postmaster mail address is unreachable, make a phone call or use their website. This issue is completely unrelated to postfix now. -- Tom
