I am getting email bounce backs from a few different recipients. This has just started in the last week or so.
An example is below
----- The following addresses had permanent fatal errors ----- <address>
there are multiple different error messages, I've put two below
----- The following addresses had permanent fatal errors ----- <xxxxxx>
----- Transcript of session follows ----- ... while talking to asav.iinet.net.au.:
<<< 554 Your access to this mail system from 22.214.171.124 has been rejected due to the sending MTA's poor reputation. If you believe that this failure is in error, please contact the intended recipient via alternate means.
554 5.0.0 Service unavailable
Your message did not reach some or all of the intended recipients.
The following recipient(s) cannot be reached:
xxxxx on 11/02/2022 8:22 AM
554 5.7.1 [TPG-S02] [21AMLkHU031444] Message rejected as it appears to be spam. Use SMTP AUTH, PostOffice, or contact the Postmaster Team <firstname.lastname@example.org>
@juliea . For errors like #2, try enabling SMTP authentication in your email client. You may have had a network dropout and you have been given an ip address which has this requirement in TPG's mail server.
For errors like #1, this is for TPG to work out with iiNet.
Send an email to email@example.com detailing the problem. Include the full text of the error messages, with sender and recipient addresses.