I am using a local postfix smtp and getting this error: 503 5.5.1 Error: authentication not enabled DISCOURSE_SMTP_ADDRESS: mail.xxx.net DISCOURSE_SMTP_PORT: 587 DISCOURSE_SMTP_USER_NAME: resources@xxx.net DISCOURSE_SMTP_PASSWORD: password123? DISCOURSE_SMTP_ENABLE_START_TLS: true # (optional, default true) DISCOURSE_SMTP_OPENSSL_VERIFY_MODE: none DISCOURSE_SMTP_AUTHENTICATION: “plain” I added the last 2 options as a last resort but made no effect. The smtp server works in all testing tools I used, like openssl or swaks from inside the docker container. root@resources-app:/# swaks --to resources@xxx.net --server mail.xxx.net:587 -tls === Trying mail.xxx.net:587... === Connected to mail.xxx.net. EHLO resources-app STARTTLS EHLO resources-app MAIL FROM: RCPT TO: DATA . ~> Date: Tue, 03 Aug 2021 11:04:12 +0000 ~> To: resources@xxx.net ~> From: root@resources-app ~> Subject: test Tue, 03 Aug 2021 11:04:12 +0000 ~> Message-Id: ~> X-Mailer: swaks v20181104.0 jetmore.org/john/code/swaks/ ~> ~> This is a test mailing ~> ~> ~> . QUIT <~ 221 2.0.0 Bye === Connection closed with remote host.

The error could mean that you don’t have smtp_sasl_auth_enable = yes in your postfix conf. what is the output of postconf -n does it contain the above string? if not, then please uncomment or edit /etc/postfix/main.cf and report back.

[תמונה] tiagofreitas87: smtpd_sasl_security_options = noanonymous noplaintext [תמונה] tiagofreitas87: DISCOURSE_SMTP_AUTHENTICATION: “plain” I think the above two options are contradictory. You should set the correct authentication method in discourse for this to work.

makes sense, I don’t use SASL so I set those options to make it more secure. What methods are available? Also why is SASL mandatory? I had it disabled before and SMTP worked in all other applications like nextcloud and thunderbird SASL is only needed to send email to remote servers, but this server only works locally Thanks

My understanding may be flawed here but I think sasl is needed because the docker container is logically separate from the host which has postfix running on it. I’d say maybe try lowering the hardening of postfix and see what works best for you? This file should give you some idea about how those settings discourse/config/discourse_defaults.conf at main · discourse/discourse · GitHub

That defaults file doesn’t have all the possible values, was wondering if there is a more secure option. Will look at the code/libs later

[תמונה] tiagofreitas87: smtpd_sasl_security_options removing the security options still doesn’t fix it. do I need to run launcher app rebuild before running discourse-doctor again? thanks

[תמונה] tiagofreitas87: smtpd_sasl_security_options Notice the d Discourse should only really need the parameters starting with smtp and not smtpd

I only have smtp_sasl_auth_enable = yes no other restrictions…

שגיאת SMTP 503 5.5.1: אימות לא הופעל

תמיכה התקנה

tiagofreitas87 (Tiago Freitas) 3 באוגוסט,‏ 2021,‏ 3:48pm 3

I do have
smtp_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous noplaintext
smtpd_tls_security_level = encrypt
smtpd_use_tls = yes

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שגיאת SMTP 503 5.5.1: אימות לא הופעל

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