@huttone1 . In the bounce mail, the recipient name has acquired "sd" in front of nbnpod. Can you check that the name is correct when you type the recipient.
Also try sending to nbnpod@tpgtelecom.com.au.
Are you using the TMC webmail interface or a mail client on your device?
Send a private message to a moderator.
(https://community.tpg.com.au/t5/Welcome/How-do-I-private-message-PM-in-the-community/m-p/4093)
Include the link to this thread:
https://community.tpg.com.au/t5/NBN-Installation/Proof-of-occupancy-email-bounce-back/m-p/147416
Since TPG still owns the "tpgtelecom" domain (since they want the proof document), they can check this from their end with their email provider.
If you have been transferred to TMC, this might be something for them to fix. Make a support call for this problem. Include the image of the bounce message.
The things to note:
550 SPF Sender Invalid - envelope rejected
Reason: The inbound message has been rejected because the originated IP address isn't listed in the published SPF records for the sending domain.
Action: Ensure all the IP addresses for your mail servers are listed in your SPF records. Alternatively, create a DNS Authentication (Inbound / Outbound) policy with the "Inbound SPF" or "Reject on Hard Fail" option disabled. Messages that fail our SPF checks are subjected to spam and RBL checks instead of being rejected.
