MyBB - email's by SMTP

Kaziu

Hello,

I’m new here 🙂 I have been using mailcow since 2 weeks. Generally everything works well. I can send mails by Sogo, Mailtester gives me 10/10 note. But i have problems with my MyBB forum and sending mails (ex. registration mails) with smtp by forum engine. Sometimes mails are sent well without any errors, sometimes mails are sent with error in forum log - “Mail may not be delivered. Reason: N/A” but the mail reaches the addressee and i havent errors in mailcow logs (postfix, raspamd etc.). Sometimes mails aren’t sent with error in forum log - “The mail server is not ready, it did not respond with a 220 status message”, but no errors in mailcow logs. I haven’t found any rule it happens randomly. I test it on my gmail account and mailcow account. Sometimes mails are sent and sometimes not.

My MyBB SMTP conf:

Smtp host: mail.myhost.com
stmp login: myaccount@myhost.com
port: 587 with TLS secure

When I use SoGo webmail (in mailcow) e-mails always are sent.

Previously I used external mail account on hosting, and my forum sent mail by smtp and i hadn’t any errors.

Can you help me?

Rostuse

Hello Kaziu

First, create a mailbox let’s name it smtp@yourmailserver.com.
After that, edit the same account and under “Allow to send as” Disable sender check for domain* (+ alias domains)
On the same page, in Allowed protocols leave just SMTP, save and close.
Click on the Login action for the same mailbox.
In the App passwords section, create an App Password, give it a name, generate a Password, and at the Allowed protocols for app password leave just SMTP as well, and create the App.
Once you have created the App Password, you can use the same for your websites.
Host: mail.yourmailserver.com
User: smtp@yourmailserver.com
Pass: the App Password you have created earlier.

Hope this helps you.

Kaziu

Rostuse Thank you for your advice. I will test it. Do you use port 587 or 465? TLS/SSL? Did you enforce TLS?

Rostuse

Kaziu I use TLS 587, and I did not enforce TLS.

Kaziu

Sometime i still have some errors when i send e-mail from mybb forum:

“Unable to connect to the mail server with the given details. Reason: 0:”
or
“Mail may not be delivered. Reason: N/A”

Some times e-mail is delivered without any errors.

MMaiato

Hello,
Here is some updated information that worked for me.
https://mmaiato.com/forum/Thread-MyBB-and-SMTP-Gmail-COM-Working-Finally"