Error using external smtp mail server

[SolarSimon]

Hi there, I successfully migrated from a selfhosted docker installation to cloudron. So far as I can see everything works fine.

Only sending mails doesn't work. I configurated the domain to use an external smtp. I used that same smtp server for my selfhosted discourse installations.
There I had to configure mail-login in containers/app.yml

My App-configuration in Cloudron

• E-Mail FROM Adresse: mail@domain
• x Do not configure inbox

My mail-configuration for domain

• external smtp
• status: test Mail arrives

My Mail Event Log:

no-reply@domain 	admin@domain 	Delivered mail
community+verp-7077d0c715a9701676aba02c5ae1ce03@domain 	- 	Connection denied. Authenticated user community@domain cannot send mail as community+verp-7077d0c715a9701676aba02c5ae1ce03@domain

Discourse settings: Delivery Method

address: 	mail
port:	2525
domain: 	goodmotion.de
user_name:	community@domain
authentication: 	plain
enable_starttls_auto: 	true

I can not change these settings. Adress "mail" looks wrong, the port is also different then configured in cloudron external smtp

[nebulon]

The apps on Cloudron are packaged, so they will always use the email solution on coming with Cloudron. So your manual changes in discourse will be overwritten on every app start.

In your case you can configure the other smtp server as the relay for that domain. This way all apps installed on that domain will have the same deliver-ability and don't need to be configured individually.

[SolarSimon]

I had to enable Masquerading under settings.
"Masquerading allows users and apps to send emails with an arbitrary username in the FROM address."

[nebulon]

@solarsimon thanks for sharing your solution!

[girish]

@solarsimon mm, usually that should not be required. Did you set the mail from address of the discourse app in the Email view - https://docs.cloudron.io/apps/#mail-from-address ?