Re: strange SMTP interaction with mail.openbsd.org ?
On Fri, Sep 11, 2020, Leen Besselink wrote: > I waited longer now and CHUNKING is not in the EHLO banner, but I do see > QUiT again without sending any emails. > So even though I had turned it off and on a couple of times, it was probably > just a coincidence. Did you get an answer from postmaster@? It would be interesting to know what is going on. -- Address is valid for this mailing list only, please do not reply to it direcly, but to the list.
Re: strange SMTP interaction with mail.openbsd.org ?
On 08-09-2020 10:30, Claus Assmann wrote: On Mon, Sep 07, 2020, Leen Besselink wrote: So I just got confirmation, when CHUNKING is in the EHLO then it will do STARTTLS, but after a second EHLO it will notice the CHUNKING and just QUIT. Interesting... but unfortunately that's not the problem I am seeing - my server does not offer CHUNKING and the "drops" seem to be random (maybe some artifact of the scheduling in smtpd?) Seems you are right. I waited longer now and CHUNKING is not in the EHLO banner, but I do see QUiT again without sending any emails. So even though I had turned it off and on a couple of times, it was probably just a coincidence.
Re: strange SMTP interaction with mail.openbsd.org ?
On Mon, Sep 07, 2020, Leen Besselink wrote: > So I just got confirmation, when CHUNKING is in the EHLO then it will do > STARTTLS, but after a second EHLO it will notice the CHUNKING and just QUIT. Interesting... but unfortunately that's not the problem I am seeing - my server does not offer CHUNKING and the "drops" seem to be random (maybe some artifact of the scheduling in smtpd?) -- Address is valid for this mailing list only, please do not reply to it direcly, but to the list.
Re: strange SMTP interaction with mail.openbsd.org ?
On 07-09-2020 09:48, Leen Besselink wrote: On 07-09-2020 09:41, Leen Besselink wrote: On 07-09-2020 06:53, Claus Assmann wrote: On Sun, Sep 06, 2020, Leen Besselink wrote: So I was checking the logs and I saw mail.openbsd.org connected and disconnected but strange enough did not deliver any mail: I noticed something similar and asked on misc at opensmtpd.org Date: Sat, 16 May 2020 12:20:35 +0200 Subject: design or error: no transaction started by opensmtpd Message-ID: <20200516102035.ga45...@kiel.esmtp.org> but nobody replied. Thanks for your reply ! Good to know I'm not the only one. :-) Based on the Postfix logs, it looks to me like it does only does: EHLO, STARTTLS, EHLO and QUIT. I've enabled debug in Postfix for the IP of mail.openbsd.org but very likely just show what I just mentioned. So most likely their is something in the EHLO which scares off the mail.openbsd.org Only difference I see between the 2 mailservers I'm using for this domain for the EHLO is the one that doesn't receive the mail announced it supports CHUNKING Which I've now turned off to be announced in the EHLO Let's see what happens... OK, with CHUNKING not mentioned in the EHLO mail did arrive, so I turned it back on. So I just got confirmation, when CHUNKING is in the EHLO then it will do STARTTLS, but after a second EHLO it will notice the CHUNKING and just QUIT. My guess is this is a bug/misconfiguration. I'll try to contact postmas...@openbsd.org and see what happens.
Re: strange SMTP interaction with mail.openbsd.org ?
On 07-09-2020 09:41, Leen Besselink wrote: On 07-09-2020 06:53, Claus Assmann wrote: On Sun, Sep 06, 2020, Leen Besselink wrote: So I was checking the logs and I saw mail.openbsd.org connected and disconnected but strange enough did not deliver any mail: I noticed something similar and asked on misc at opensmtpd.org Date: Sat, 16 May 2020 12:20:35 +0200 Subject: design or error: no transaction started by opensmtpd Message-ID: <20200516102035.ga45...@kiel.esmtp.org> but nobody replied. Thanks for your reply ! Good to know I'm not the only one. :-) Based on the Postfix logs, it looks to me like it does only does: EHLO, STARTTLS, EHLO and QUIT. I've enabled debug in Postfix for the IP of mail.openbsd.org but very likely just show what I just mentioned. So most likely their is something in the EHLO which scares off the mail.openbsd.org Only difference I see between the 2 mailservers I'm using for this domain for the EHLO is the one that doesn't receive the mail announced it supports CHUNKING Which I've now turned off to be announced in the EHLO Let's see what happens... OK, with CHUNKING not mentioned in the EHLO mail did arrive, so I turned it back on.
Re: strange SMTP interaction with mail.openbsd.org ?
On 07-09-2020 06:53, Claus Assmann wrote: On Sun, Sep 06, 2020, Leen Besselink wrote: So I was checking the logs and I saw mail.openbsd.org connected and disconnected but strange enough did not deliver any mail: I noticed something similar and asked on misc at opensmtpd.org Date: Sat, 16 May 2020 12:20:35 +0200 Subject: design or error: no transaction started by opensmtpd Message-ID: <20200516102035.ga45...@kiel.esmtp.org> but nobody replied. Thanks for your reply ! Good to know I'm not the only one. :-) Based on the Postfix logs, it looks to me like it does only does: EHLO, STARTTLS, EHLO and QUIT. I've enabled debug in Postfix for the IP of mail.openbsd.org but very likely just show what I just mentioned. So most likely their is something in the EHLO which scares off the mail.openbsd.org Only difference I see between the 2 mailservers I'm using for this domain for the EHLO is the one that doesn't receive the mail announced it supports CHUNKING Which I've now turned off to be announced in the EHLO Let's see what happens...
Re: strange SMTP interaction with mail.openbsd.org ?
On Sun, Sep 06, 2020, Leen Besselink wrote: > So I was checking the logs and I saw mail.openbsd.org connected and > disconnected but strange enough did not deliver any mail: I noticed something similar and asked on misc at opensmtpd.org Date: Sat, 16 May 2020 12:20:35 +0200 Subject: design or error: no transaction started by opensmtpd Message-ID: <20200516102035.ga45...@kiel.esmtp.org> but nobody replied. -- Address is valid for this mailing list only, please do not reply to it direcly, but to the list.
Re: strange SMTP interaction with mail.openbsd.org ?
On Sep 6, 2020 4:24 PM, Leen Besselink wrote: Hi, Recently we've set up a Postfix mailserver with TLS (valid Let's Encrypt certificate). So I was checking the logs and I saw mail.openbsd.org connected and disconnected but strange enough did not deliver any mail: Sep 6 21:47:13 mx5 postfix/smtpd[938]: connect from mail.openbsd.org[199.185.178.25] Sep 6 21:47:14 mx5 postfix/smtpd[938]: Anonymous TLS connection established from mail.openbsd.org[199.185.178.25]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits) Sep 6 21:47:15 mx5 postfix/smtpd[938]: disconnect from mail.openbsd.org[199.185.178.25] ehlo=2 starttls=1 quit=1 commands=4 When I checked on the other server, it seems mail.openbsd.org probably tried to deliver '20200906194148.ga50...@dalek.home.local'. The name in the MX-record matches the forward and reverse DNS, the HELO/EHLO name and certificate. Any idea what could have happened ?(or maybe how to contact the person(s) running mail.openbsd.org) With kind regards, Leen. Have you tried postmas...@openbsd.org?
strange SMTP interaction with mail.openbsd.org ?
Hi, Recently we've set up a Postfix mailserver with TLS (valid Let's Encrypt certificate). So I was checking the logs and I saw mail.openbsd.org connected and disconnected but strange enough did not deliver any mail: Sep 6 21:47:13 mx5 postfix/smtpd[938]: connect from mail.openbsd.org[199.185.178.25] Sep 6 21:47:14 mx5 postfix/smtpd[938]: Anonymous TLS connection established from mail.openbsd.org[199.185.178.25]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits) Sep 6 21:47:15 mx5 postfix/smtpd[938]: disconnect from mail.openbsd.org[199.185.178.25] ehlo=2 starttls=1 quit=1 commands=4 When I checked on the other server, it seems mail.openbsd.org probably tried to deliver '20200906194148.ga50...@dalek.home.local'. The name in the MX-record matches the forward and reverse DNS, the HELO/EHLO name and certificate. Any idea what could have happened ?(or maybe how to contact the person(s) running mail.openbsd.org) With kind regards, Leen.
