Unable to send via smtp but sending/receiving via Sogo works

azakero

I have successfully set up a mail server and can send and receive emails through Sogo to my Gmail account. But I want to use this mail server for my “Contact Us” form in my website which is based on NodeJS and Nodemailer as the transporter and receive emails in my Gmail account. That is if my email id is admin@example.com then I want send all the contact us emails to my gmail account through this. To achieve that, I have used these settings:

SMTP_HOSTNAME=mail.example.com SMTP_USERNAME=<username which I use to login to my Sogo client is the email id: admin@example.com> SMTP_PASSWORD=<password which I use to login to my Sogo client> SMTP_PORT=<tried 25, 443, 465, 587, 8443, 993 and some more >

All the ports in my Ubuntu 20.04 looks like this via Netstat:

These are my HTTP bindings in mailcow.conf file:
HTTP_BIND=127.0.0.1 HTTP_PORT=8080 HTTPS_BIND=127.0.0.1 HTTPS_PORT=8443

What am I doing wrong here?

tbrummell

If your website is hosted on the same Docker instance you’d need to point smtp hostname to the internal IP of postfix.

If it’s on an external box to Mailcow, then you are on the right track with what you posted above as details for hostanme, user & password, but you need to use SSL on port 465.

azakero

tbrummell Website is totally separate and not dockerized. It is a simple Nodejs app with Pm2 as process manager and Nginx as reverse proxy. I tried 465 as SMTP_PORT but it didn’t work.

Can you please tell me where and how I can set up SSL for port 465? Please note that I have SSL installed for my hostname already.

And please bear with me with all these noob questions. I am fairly new to these server world.

tbrummell

The SSL is something that your NodeJS web server will have to support. It will need to use SSL on port 465 to send the mail with your SOGo credentials. That’s all I can tell you, not a NodeJS guy. I do have my Xenforo forum doing this just fine.

azakero

tbrummell Thanks so much. However, I have another issue. If I send an email from my mailbox to ProtonMail, I don’t receive them, but it’s working fine with Gmail. Why is that?

This is what I see in Queue Manager: