Sending notifications via SMTP SSL @ port 465

GiuseppeR

Hello everyone,

since a lot of time I have to send notifications using mailservers via port 25, not all of them have TLS support, a lot of mailservers have SSL support.

You can see it in a USG60W:

You can see the same on a Flex200H:

Is there a plan to introduce SSL SMTP usage?

Thanks a lot

Zyxel_Melen

Update:

After checking the configuration and enabling TLS Security, the mail server receives the notification. It seems like the server supports TLS.

PeterUK

Why not use StarTTLS

I think when you enable just TLS and change the port 465 that should work?

GiuseppeR

Unfortunately not all hostings let you have all the possible configs.

As you can see with standard port:

With specific port 587:

Giving back errors also when using 465 port:

Zyxel_Melen

Hi @GiuseppeR,

Could you help to try with the configuration below?

1. Change the port to 465.
2. Do not enable TLS security.

If fails, please help to capture the packets on the firewall and share the mail server's logs with us.

GiuseppeR

Hello @Zyxel_Melen

as you asked me I tried all of that, you have a PM with details.

You will see a link to download the requested file becuase I had issues to upload it directly:

Zyxel_Melen

Update:

After checking the configuration and enabling TLS Security, the mail server receives the notification. It seems like the server supports TLS.