Error connecting to SMTP

[Franz-Heinz]

Hello, I'm stuck trying to set up email notification

My .env looks like this:

SMTP_SERVER=mail.servername.de
SMTP_PORT=587
SMTP_DOMAIN=servername.de
SMTP_USERNAME=username@servername.de
SMTP_PASSWORD=password
SMTP_AUTH=plain
SMTP_STARTTLS_AUTO=true
# Specify the email address that all mail is sent from
SMTP_SENDER=bigbluebutton@servername.de

I also tried to add EMAIL_SENDER=bigbluebutton@servernameserver.de

When I test the configuration with docker run --rm --env-file ~/greenlight/.env bigbluebutton/greenlight:v2 bundle exec rake conf:check

I always get: Error connecting to SMTP - 550 5.1.1 <notifications@example.com>: Recipient address rejected: User unknown in virtual mailbox table

It seems, I just can't figure out, where the notifications@example.com comes from and how to get rid of it.

[Sea444]

Doing the configuration check you mentioned, I get an error message on my server as well: Checking SMTP connection: Failed Error connecting to SMTP - 556 5.1.10 <notifications@example.com>: Recipient address rejected: Domain example.com does not accept mail (nullMX)

But despite the error message, greenlight can send verification and password-reset-mails. SO I ignored thos error message.-

Yes, you should have the option to select your own recipient e-mail address to test the e-mailk-sending.

[farhatahmad]

We should probably be using the value of SMTP_SENDER (if set) for the configuration check instead of the default email that we use now

[erotavlasme]

I have some problem with SMTP too. I verified all the configurations with thunderbird and then with docker run --rm --env-file .env bigbluebutton/greenlight:v2 bundle exec rake conf:check. In particular, I tried with sendmail, with common providers (gmail, hotmail-outlook, etc.) as well with custom provider and I was able to setup just gmail.

• sendmail: default setting with empty fields.

  Checking SMTP connection: Failed
  Error connecting to SMTP - Connection refused - connect(2) for "" port 

  I tried to install sendmail package without success.

• gmail: default setting works with gmail values if I enable 2FA and I create a password for third party application or via this workaround.
• hotmail-outlook: it does not work:

  SMTP_SERVER=smtp.office365.com
  SMTP_PORT=587
  SMTP_DOMAIN=office365.com
  SMTP_USERNAME=username@hotmail.com
  SMTP_PASSWORD=password
  SMTP_AUTH=plain or login
  SMTP_STARTTLS_AUTO=true

  SMTP_AUTH=plain
  Error connecting to SMTP - 504 5.7.4 Unrecognized authentication type [AM4PR0902CA0002.eurprd09.prod.outlook.com]

  SMTP_AUTH=login
  Error connecting to SMTP - 535 5.7.3 Authentication unsuccessful [AM0PR10CA0059.EURPRD10.PROD.OUTLOOK.COM]

• custom provider: it does not work:

  SMTP_SERVER=smtp.domain
  SMTP_PORT=465
  SMTP_DOMAIN=domain
  SMTP_USERNAME=username@domain
  SMTP_PASSWORD=password
  SMTP_AUTH=plain
  SMTP_STARTTLS_AUTO=true

  Error connecting to SMTP - Connection reset by peer I could not find my answer on the documentation. Any idea?

[tarunb999]

@erotavlas-turbo yes you are right, even I was not able to work with my custom SMTP details from Zoho. Had to use gmail and with the removing the various security features that Gmail has introduced.

[amenolo]

Same here...tested with username@mydomain.tld: zero problem via standard client or telnet, 500 Unrecognized command error via Greenlight...very frustrating...

[farhatahmad]

I believe this has been fixed for a while