Mail Server Settings, Why no STARTTLS
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I am trying to set up email sending from the software controller (Version 4.1.5) and the settings for the mail serve allow you to tick SSL, but has no options for STARTTLS. My mail server requires TLS for authenticated connections, but expects a plain connection followed by STARTTLS to move to a secure connection.
This does not seem to be a supported configuration, so I am not able to send email at the moment, unless there is a workaround?
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Dear @Ben.Suffolk,
I am trying to set up email sending from the software controller (Version 4.1.5) and the settings for the mail serve allow you to tick SSL, but has no options for STARTTLS. My mail server requires TLS for authenticated connections, but expects a plain connection followed by STARTTLS to move to a secure connection.
Try upgrading to Controller V4.2.4, tick SSL, and specify the port you need, check if it works for you.
https://www.tp-link.com/en/support/download/omada-software-controller/#Controller_Software
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Having the same problem, with version 4.3.5.
Tried with several mail servers, with different configurations, but did not work at all. Also had same configuration as in my eMail-client, but same result. Anything else waht i can do, anyone elso has an idea?.
Best,
Patrick
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Dear @mallorcalounge,
mallorcalounge wrote
Tried with several mail servers, with different configurations, but did not work at all. Also had same configuration as in my eMail-client, but same result. Anything else waht i can do, anyone elso has an idea?.
The current SDN Controller doesn't support configuring Mail Server with STARTTLS, but there is a plan to support STARTTLS in v5.x.
At present, you may choose other mail servers instead, refer to this FAQ.
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In 5.0.29 it doesnt work for me:
DEBUG SMTP: trying to connect to host "smtp.*****.****", port 587, isSSL false 220 us2.outbound.mailhostbox.com ESMTP Postfix DEBUG SMTP: connected to host "smtp.*****.****", port: 587 EHLO 493c9d0c68f2 250-us2.outbound.mailhostbox.com 250-PIPELINING 250-SIZE 41648128 250-VRFY 250-ETRN 250-STARTTLS 250-AUTH PLAIN LOGIN 250-AUTH=PLAIN LOGIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN DEBUG SMTP: Found extension "PIPELINING", arg "" DEBUG SMTP: Found extension "SIZE", arg "41648128" DEBUG SMTP: Found extension "VRFY", arg "" DEBUG SMTP: Found extension "ETRN", arg "" DEBUG SMTP: Found extension "STARTTLS", arg "" DEBUG SMTP: Found extension "AUTH", arg "PLAIN LOGIN" DEBUG SMTP: Found extension "AUTH=PLAIN", arg "LOGIN" DEBUG SMTP: Found extension "ENHANCEDSTATUSCODES", arg "" DEBUG SMTP: Found extension "8BITMIME", arg "" DEBUG SMTP: Found extension "DSN", arg "" STARTTLS 220 us2.outbound.mailhostbox.com ESMTP Postfix DEBUG SMTP: connected to host "smtp.*****.****", port: 587 EHLO 493c9d0c68f2 250-us2.outbound.mailhostbox.com 250-PIPELINING 250-SIZE 41648128 250-VRFY 250-ETRN 250-STARTTLS 250-AUTH PLAIN LOGIN 250-AUTH=PLAIN LOGIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN DEBUG SMTP: Found extension "PIPELINING", arg "" DEBUG SMTP: Found extension "SIZE", arg "41648128" DEBUG SMTP: Found extension "VRFY", arg "" DEBUG SMTP: Found extension "ETRN", arg "" DEBUG SMTP: Found extension "STARTTLS", arg "" DEBUG SMTP: Found extension "AUTH", arg "PLAIN LOGIN" DEBUG SMTP: Found extension "AUTH=PLAIN", arg "LOGIN" DEBUG SMTP: Found extension "ENHANCEDSTATUSCODES", arg "" DEBUG SMTP: Found extension "8BITMIME", arg "" DEBUG SMTP: Found extension "DSN", arg "" STARTTLS 220 2.0.0 Ready to start TLS 01-09-2022 21:12:33.603 WARN [email-task-2] [] c.t.s.o.c.s.a(133): Send mail exception Could not convert socket to TLS
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