Email address stop working in the last couple of days

[orthrus1]

The message could not be sent. The setting for your outgoing email [SMTP] server might need to be configured. To find the server settings for 'micktanja@optusnet.com.au', please contact your email service provider.

Subject 'test'
Server Error: 550
Server Response: 550 5.7.1 <micktanja@optusnet.com.au>... Relaying denied. Proper authentication required.
Server: 'mail.tpg.com.au'
Windows Live Mail Error ID: 0x800CCC79
Protocol: SMTP
Port: 25
Secure(SSL): No

[david64]

Hi @orthrus1 . Can you enable Authentication, and set your username and password in the sending settings.

Should you be using your TPG email address rather than Optus?

[Ahra_G]

 Hi @orthrus1,

Please confirm if this is for a TPG email address.

Nonetheless, to try and fix the issue, you must change your email account settings and specify the SMTP server used and as @david64 suggested, put a tick on  ‘My server requires authentication’

Hope this helps! 

-Ahra_G