x.1.xxx Addressing Status

The address status reports on the originator or destination address. It may include address syntax or validity. These errors can generally be corrected by the sender and retried.

x.1.0
Other address status
x.1.1
Bad destination mailbox address
x.1.2
Bad destination system address
x.1.3
Bad destination mailbox address syntax
x.1.4
Destination mailbox address ambiguous
x.1.5
Destination address valid
x.1.6
Destination mailbox has moved, No forwarding address
x.1.7
Bad sender's mailbox address syntax
x.1.8
Bad sender's system address