Hi I am trying to contact postmaster@tpg.com.au because TPG are blocking our emails being sent to all our TPG and all it's associated organisations, but emails to postmaster are being rejected with the following from atmail Cloud Mail System atmail Cloud Mail System
Does anyone know how to contact postmaster ? It looks like TPG are rejecting their own domain.
Thanks
Tim
This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:
postmast@tpgtelecom.com.au
host au-smtp-inbound-1.mimecast.com [103.96.22.26]
SMTP error from remote mail server after RCPT TO:<postmast@tpgtelecom.com.au>:
550 SPF Sender Invalid - envelope rejected - https://community.mimecast.com/docs/DOC-1369#550 [ucNg4mnsOmaDcdVswJExvQ.au24]
Reporting-MTA: dns; omr.i-0e5869b43dfedcea0
Action: failed
Final-Recipient: rfc822;postmast@tpgtelecom.com.au
Status: 5.0.0
Remote-MTA: dns; au-smtp-inbound-1.mimecast.com
Diagnostic-Code: smtp; 550 SPF Sender Invalid - envelope rejected - https://community.mimecast.com/docs/DOC-1369#550 [ucNg4mnsOmaDcdVswJExvQ.au24]
