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An issue was discovered yesterday (7/1) affecting MacOSX connecting to Eduroam related to the new SHA-256 VT-Wireless certificate and it requiring a matching SHA-256 Root CA.  New certificates have been put in... view Status History All Active Statuses

550 Domain Blacklisted Error when Sending Email to VT Google Apps Mail Account

Question:
When I try to send a message to a VT Google Apps Mail address, I receive the error message "550- This domain is blacklisted, consult your postmaster." What should I do?
Answer:

For instructions, see 550 Domain Blacklisted Error when Sending Email to VT Google Apps Mail Account.

Mon, 08/05/2013 - 12:17pm 6213 Views Article ID: 2521