Undeliverable Mail

[Staci]

550 not local host usi.biz', not a gateway
I keep on getting the above error and I sent emails to
this address yesterday. I was testing other accounts and
emails and they worked, it's just a selected few. Does
anyone know why???

Thanks

 

[Nikki Peterson [MVP - Outlook]]

Try reading the following:

Troubleshoot 550, 553, and relay-prohibited errors:
http://office.microsoft.com/assistance/preview.aspx?AssetID=HA011128331033

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Nikki Peterson [MVP - Outlook]

550 not local host usi.biz', not a gateway
I keep on getting the above error and I sent emails to
this address yesterday. I was testing other accounts and
emails and they worked, it's just a selected few. Does
anyone know why???

Thanks

 

[Mary]

Perhaps it's because .biz is not a valid domain name.