Undeliverable email - incoming

[dl2276]

Hi there,

I have a tpg.com.au email and it seems to be blocking messages from hotmail.com. Below is extract of bounce back message received from hotmail.com:

Diagnostic information for administrators:

Generating server: HK2PR01MB3396.apcprd01.prod.exchangelabs.com
Receiving server: HK2PR01MB3396.apcprd01.prod.exchangelabs.com
Total retry attempts: 14

5/1/2021 10:14:54 PM - Server at HK2PR01MB3396.apcprd01.prod.exchangelabs.com returned '550 5.4.317 Message expired, cannot connect to remote server(421 Service not available, closing transmission channel)'
5/1/2021 10:07:28 PM - Server at tpg.com.au (27.32.32.10) returned '450 4.4.317 Cannot connect to remote server [Message=421 Service not available, closing transmission channel] [LastAttemptedServerName=tpg.com.au] [LastAttemptedIP=27.32.32.10:25] [SG2APC01FT008.eop-APC01.prod.protection.outlook.com](421 Service not available, closing transmission channel)'

Thank you

[BasilDV]

Thanks for raising this to our attention @dl2276

We'll raise this with our Post Masters for further investigation and updates will be given as soon as it becomes available.

BasilDV

[dl2276]

Hi BasilDV,

Thanks for the reply. I think the issue has resolved as emails are once again being received.

Thank you.

[BasilDV]

Hi @dl2276

Thanks for the update.

Please keep on observing the service and let us know if the issue recurs.

Cheers!

BasilDV