TPG bouncing emails from .au domain

[ritslam]

Hi. My company has just switched email addresses to the new .au domain, but all emails sent to tpg addresses are bouncing back as undeliverable with the message:

Error Details

Reported error: 550 5.0.350 Remote server returned an error -> 554 Your access to this mail system has been rejected due to poor reputation of a domain used in message transfer DSN generated by: ME2PR01MB6033.ausprd01.prod.outlook.com

[Ahra_G]

Hi @ritslam, 

Could you please confirm if you are using a TPG email address in sending these emails? What type of mail client are you using? 
 

Thanks! 

Ahra_G

[ritslam]

Hi @Ahra_G 

Email client is Microsoft 365/microsoft server. Address being sent to is my personal @tpg.com.au address.

Thanks

[Aubrey]

Hi ritslam, please send your TPG email address via private message so we can have this investigated. 

Thanks!