1999-03-02 09:44:33 10HmaY-0005vi-00 <= <> U=CALLER P=local-smtp S=sss 1999-03-02 09:44:33 10HmaZ-0005vi-00 <= abc@somewhere U=CALLER P=local S=sss 1999-03-02 09:44:33 10HmaX-0005vi-00 U=CALLER F=<> rejected after DATA: domain missing or malformed: failing address in "To:" header is: abc@xyz.