Mass Mail SMTP Error

[MJHost]

Okay, so this is a new problem for us.

 

We use the Mass Mail function quite regularly, and have just come across an error, saying:

 

SMTP Error: Could not authenticate.

 

We followed the documentation from WHMCS, and edited configuration.php, adding the:

$smtp_debug = true;

 

This has resulted in the following information:

 

CLIENT -> SERVER: EHLO http://www.mjhost.co.uk

CLIENT -> SERVER: AUTH LOGIN

CLIENT -> SERVER: ************************=

CLIENT -> SERVER: ******************

SMTP ERROR: Password command failed: 535 Incorrect authentication data

SMTP Error: Could not authenticate.

CLIENT -> SERVER: QUIT

SMTP Error: Could not authenticate.

 

This has started occurring today, we have made no changes, and the password is correct. (We even tried a password change to make sure)

 

Anyone able to offer any advice, or suggestions? Greatly appreciated.

Edited August 7, 2015 by WHMCS Nate
removed hashed login details from post

[sentq]

is your password is correct?

connection Port?

SSL or TLS connection or none?

 

is it your SMTP sever or Google's, etc?

[MJHost]

Hi sentq,

 

Thank you for your reply.

 

We managed to find out what the error was. It was rectified at the datacenter.