I have tested server side and via the SOGo web interface, and I see no problems with SMTP

The problem is in the connection between Thunderbird and the mail server.

[ see attached image ]

I've deleted the existing exemption certificates from the "old" mail server (different IP, same name) to eliminate confusion, and I've accepted a "new" exemption certificate from the "new" mail server.

The "old" server is running with no services active (again, to eliminate confusion)

I've tried the various SMTP settings in TB -- None, STARTTLS, SSL/TLS

*Should I be using Port 587?* It is not currently active on the mail server.

I tried setting Port 587 in "inet_listener lmtp" but it required Port 24 (and, that's proper for receiving mail)

*Where would I set Port 587 in Dovecot/Postfix**?*  And, would that help?

SOGo Integrator is set to HTTP://ip_address not HTTPS (although it will work both ways) We will have to set it to HTTPS when we configure Outlook (once we receive updated "ocsmanager-rpcproxy" packages)

*Should I set it to HTTPS now?*  Here's the relevant "mail.log" entries:

(1) using STARTTLS

Jan 20 07:13:08 sogo postfix/smtpd[17495]: connect from unknown[192.168.121.179]

Jan 20 07:13:09 sogo postfix/smtpd[17495]: NOQUEUE: reject: RCPT from unknown[192.168.121.179]: 454 4.7.1 <[email protected]>: Relay access denied; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<[192.168.121.179]>

Jan 20 07:13:14 sogo postfix/smtpd[17495]: disconnect from unknown[192.168.121.179]


(2) using SSL/TLS

Jan 20 07:14:15 sogo postfix/smtpd[17495]: connect from unknown[192.168.121.179]

Jan 20 07:15:05 sogo postfix/smtpd[17495]: lost connection after UNKNOWN from unknown[192.168.121.179]

Jan 20 07:15:05 sogo postfix/smtpd[17495]: disconnect from unknown[192.168.121.179]

Jan 20 07:16:27 sogo dovecot: imap-login: Disconnected (no auth attempts in 1 secs): user=<>, rip=192.168.121.179, lip=192.168.121.149, TLS: SSL_read() failed: error:14094418:SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca: SSL alert number 48, session=<YWN8aBQNEwDAqHmz>


(3) using None

Jan 20 07:17:55 sogo postfix/smtpd[17512]: connect from unknown[192.168.121.179]

Jan 20 07:17:55 sogo postfix/smtpd[17512]: NOQUEUE: reject: RCPT from unknown[192.168.121.179]: 454 4.7.1 <[email protected]>: Relay access denied; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<[192.168.121.179]>

Jan 20 07:17:58 sogo postfix/smtpd[17512]: disconnect from unknown[192.168.121.179]


(4) using STARTTLS Port 587

Jan 20 07:19:28 sogo postfix/smtpd[17512]: connect from unknown[192.168.121.179]

Jan 20 07:19:28 sogo postfix/smtpd[17512]: NOQUEUE: reject: RCPT from unknown[192.168.121.179]: 454 4.7.1 <[email protected]>: Relay access denied; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<[192.168.121.179]>

Jan 20 07:19:34 sogo postfix/smtpd[17512]: disconnect from unknown[192.168.121.179]


NOQUEUE generally signifies SMTP cannot identify the domain as a legitimate domain, but as we've seen, it works perfectly from the SOGo web interface, and the domain checks out perfectly with SMTP telnet tools.

It's strictly when trying to connect FROM Thunderbird.

*What am I overlooking?*  Thanks for any help/hints any one might have.


On 01/19/2015 05:57 PM, Steve Ankeny wrote:
I am having trouble sending mail from Thunderbird to outside recipients.

I have no problems receiving mail or sending internally, and I have no problems sending mail from the SOGo web interface whether inside or outside the mail domain. I am using a Samba AD with virtual mailboxes.

Thunderbird 31.1.2, SOGo Integrator/Connector 31.0.1

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