Email Transport Method (SMTP) not working

[TheGroove]

I've been troubleshooting this issue for a couple of days back and forth with moosend now and it looks like it's something with Xenforo.

When I test with moosend on SMTPer it successfully sends:


But when I attempt through Xenforo I get errors


Here is the error, I've tried several combinations with SSL and TLS but all throw errors when I attempt here.

++ Starting XF\Mail\SmtpTransport
<< 220 Moosend SMTP Service

> EHLO sitename.com
Click to expand...

<< 250-PLSD007...
Click to expand...

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