SMTP-Error 451 while using smarthost for mail delivery
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From: b1 on 22 Apr 2010 10:30 Hello alltogether Currently I am trying to set up a Debian Lenny Server, but I am stuck at mail delivery. The server I am trying to set up, has no FQDN, so I used my ISP-Mailserver as a smarthost (I enabled the proper SMTP authentication in exim4). This setup worked a few days, before I suddenly received 451 errors. At first I thought it to be a problem with Exim4, so I switched to postfix. But postfix also gives me the 451 error: Apr 22 15:53:31 openshoolproxy postfix/smtp[24368]: 413CF26EF9: to=<webservice(a)b1online.de>, orig_to=<root(a)openshoolproxy>, relay=smtp.strato.com[81.169.145.132]:25, delay=2137, delays=2136/0.05/0.33/0.12, dsn=4.0.0, status=deferred (host smtp.strato.com[81.169.145.132] said: 451 Local Error (in reply to end of DATA command)) To further troubleshoot my problem I used telnet to connect to smtp.strato.com and to send a mail manually. This is what I did: telnet smtp.strato.de 25 Trying 81.169.145.133... Connected to smtp.strato.de. Escape character is '^]'. 220 smtp.passthru EHLO openshoolproxy 250-smtp.passthru 250-ENHANCEDSTATUSCODES 250-8BITMIME 250-DELIVERBY 250-SIZE 104857600 250-AUTH PLAIN LOGIN CRAM-MD5 250 HELP AUTH LOGIN 334 VXNlcm5hbWU6 d2Vic2VydmljZUBiMW9ubGluZS5kZQ== 334 UGFzc3dvcmQ6 xxxxMYPASSWORD_IN_BASE64xxxx 235 2.0.0 OK Authenticated mail from: webservice(a)b1online.de 250 2.1.0 <webservice(a)b1online.de> Sender ok rcpt to: benedikt(a)b1online.de 250 2.1.5 <benedikt(a)b1online.de> Recipient ok DATA 354 Start mail input; end with <CRLF>.<CRLF> test .. 451 Local Error Very odd. After this fail I tried the same procedure from my arch linux box at home. It succeeded: telnet smtp.strato.com 25 Trying 81.169.145.132... Connected to smtp.strato.com. Escape character is '^]'. 220 post.strato.de [fruni mo3] ESMTP RZmta 23.0 ready; Thu, 22 Apr 2010 15:55:55 +0200 (MEST) EHLO openshoolproxy 250-post.strato.de [fruni mo3] greets 79.230.91.82 250-ENHANCEDSTATUSCODES 250-8BITMIME 250-PIPELINING 250-DELIVERBY 250-SIZE 104857600 250-AUTH PLAIN LOGIN CRAM-MD5 250-STARTTLS 250 HELP AUTH LOGIN 334 VXNlcm5hbWU6 d2Vic2VydmljZUBiMW9ubGluZS5kZQ== 334 UGFzc3dvcmQ6 xxxxMYPASSWORD_IN_BASE64xxxx 235 2.0.0 OK Authenticated mail from: webservice(a)b1online.de 250 2.1.0 <webservice(a)b1online.de> Sender ok rcpt to: benedikt(a)b1online.de 250 2.1.5 <benedikt(a)b1online.de> Recipient ok DATA 354 Enter data for mail with id g0718am3MD7AJw test mich .. 250 queued as g0718am3MD7AJw This looks very strange to me. Independently from my mailserver the telnet command should have succeeded on both machines. But it failed on my debian box. What could be wrong? Is this a problem of my setup, or is my ISP blocking something? Thanks in advance Benedikt -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/1271946001.11753.18.camel(a)localhost.localdomain
From: Sjoerd Hardeman on 22 Apr 2010 10:30 b1 schreef: > This looks very strange to me. Independently from my mailserver the > telnet command should have succeeded on both machines. But it failed on > my debian box. What could be wrong? Is this a problem of my setup, or is > my ISP blocking something? Did you try your Debian machine again? It might be a temporary problem which was solved during your trip home to try it on the other computer. Sjoerd
From: b1 on 22 Apr 2010 11:40 Hi Sjoerd Thank you for your answer. I just logged onto the Debian machine (per ssh) and tried it again. Unfortunately it failed again. As before it gave the 451 Local Error. On Thu, 2010-04-22 at 16:24 +0200, Sjoerd Hardeman wrote: > b1 schreef: > > This looks very strange to me. Independently from my mailserver the > > telnet command should have succeeded on both machines. But it failed on > > my debian box. What could be wrong? Is this a problem of my setup, or is > > my ISP blocking something? > Did you try your Debian machine again? It might be a temporary problem > which was solved during your trip home to try it on the other computer. > > Sjoerd > -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/1271950330.11753.22.camel(a)localhost.localdomain
From: Camaleón on 22 Apr 2010 13:30 On Thu, 22 Apr 2010 16:20:01 +0200, b1 wrote: > Currently I am trying to set up a Debian Lenny Server, but I am stuck at > mail delivery. The server I am trying to set up, has no FQDN, so I used > my ISP-Mailserver as a smarthost (I enabled the proper SMTP > authentication in exim4). > This setup worked a few days, before I suddenly received 451 errors. At > first I thought it to be a problem with Exim4, so I switched to postfix. > But postfix also gives me the 451 error: > > Apr 22 15:53:31 openshoolproxy postfix/smtp[24368]: 413CF26EF9: > to=<webservice(a)b1online.de>, orig_to=<root(a)openshoolproxy>, > relay=smtp.strato.com[81.169.145.132]:25, delay=2137, > delays=2136/0.05/0.33/0.12, dsn=4.0.0, status=deferred (host > smtp.strato.com[81.169.145.132] said: 451 Local Error (in reply to end > of DATA command)) Mmm, the remote server (81.169.145.132) has encountered some kind of error while sending "data" command. But, are you in control of Strato's server? If no, then you can only contact them and request more info about this error. If the problem is on their side, you can only "guess". (...) > telnet smtp.strato.de 25 > Trying 81.169.145.133... > Connected to smtp.strato.de. > Escape character is '^]'. > 220 smtp.passthru ^^^^^^^^^^^^^ (...) > 451 Local Error Look that "smtp.passthru" string, it seems some kind of proxy/redirector service. > Very odd. After this fail I tried the same procedure from my arch linux > box at home. It succeeded: > > > > > telnet smtp.strato.com 25 > Trying 81.169.145.132... > Connected to smtp.strato.com. > Escape character is '^]'. > 220 post.strato.de [fruni mo3] ESMTP RZmta 23.0 ready; Thu, 22 Apr 2010 > 15:55:55 +0200 (MEST) (...) > 250 queued as g0718am3MD7AJw That server response looks more "normal". No proxy between you and smtp server. (...) If available, try to send an e-mail using a secure channel (SSL/TLS 465/587 port) and check if that works. The idea behind this is to bypass the proxy server on their side altough I'm not sure this will work :-/ Greetings, -- Camaleón -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/pan.2010.04.22.17.28.16(a)gmail.com
From: deloptes on 24 Apr 2010 05:10
b1 wrote: > On Thu, 2010-04-22 at 17:28 +0000, Camaleón wrote: >> On Thu, 22 Apr 2010 16:20:01 +0200, b1 wrote: >> >> > Currently I am trying to set up a Debian Lenny Server, but I am stuck >> > at mail delivery. The server I am trying to set up, has no FQDN, so I >> > used my ISP-Mailserver as a smarthost (I enabled the proper SMTP >> > authentication in exim4). >> > This setup worked a few days, before I suddenly received 451 errors. At >> > first I thought it to be a problem with Exim4, so I switched to >> > postfix. But postfix also gives me the 451 error: >> > >> > Apr 22 15:53:31 openshoolproxy postfix/smtp[24368]: 413CF26EF9: >> > to=<webservice(a)b1online.de>, orig_to=<root(a)openshoolproxy>, >> > relay=smtp.strato.com[81.169.145.132]:25, delay=2137, >> > delays=2136/0.05/0.33/0.12, dsn=4.0.0, status=deferred (host >> > smtp.strato.com[81.169.145.132] said: 451 Local Error (in reply to end >> > of DATA command)) >> >> Mmm, the remote server (81.169.145.132) has encountered some kind of >> error while sending "data" command. >> >> But, are you in control of Strato's server? If no, then you can only >> contact them and request more info about this error. If the problem is on >> their side, you can only "guess". >> >> (...) >> >> > telnet smtp.strato.de 25 >> > Trying 81.169.145.133... >> > Connected to smtp.strato.de. >> > Escape character is '^]'. >> > 220 smtp.passthru >> ^^^^^^^^^^^^^ >> >> (...) >> >> > 451 Local Error >> >> Look that "smtp.passthru" string, it seems some kind of proxy/redirector >> service. >> >> > Very odd. After this fail I tried the same procedure from my arch linux >> > box at home. It succeeded: >> > >> > >> > >> > >> > telnet smtp.strato.com 25 >> > Trying 81.169.145.132... >> > Connected to smtp.strato.com. >> > Escape character is '^]'. >> > 220 post.strato.de [fruni mo3] ESMTP RZmta 23.0 ready; Thu, 22 Apr 2010 >> > 15:55:55 +0200 (MEST) >> >> (...) >> >> > 250 queued as g0718am3MD7AJw >> >> That server response looks more "normal". No proxy between you and smtp >> server. >> >> (...) >> >> If available, try to send an e-mail using a secure channel (SSL/TLS >> 465/587 port) and check if that works. The idea behind this is to bypass >> the proxy server on their side altough I'm not sure this will work :-/ >> >> Greetings, >> >> -- >> Camaleón >> >> > > > Hey thanks camaleon > > You pointed me at the right direction with your passthru hint. We had a > proxy on our net, through which the smtp-messages were going. This proxy > had a virus scanner, which caused the problem. After disabling the > scanner everything works fine. > > Thank you > > Benedikt > > > if you have been using amavis or am,amavis+clamav be aware that support for older clamav was thrown away, so it's not working very well. It was blocking my email for some time. regards -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/hqubp3$u6h$2(a)dough.gmane.org |