Mail Delivery Subsystem

3 messages, 1989–1994, in message-number order.

1989

• Returned mail: User unknown #474 · Mail Delivery Subsystem · 5 August 1989
• Returned mail: User unknown #558 · Mail Delivery Subsystem · 19 September 1989

1994

• [[email removed]: Returned mail: User unknown] #7557 · Mail Delivery Subsystem · 13 May 1994