Cutting out the rest of the data- This is where the connection is being closed: 278 45.011168 148.244.85.213 148.244.85.212 TCP smtp > 1342 [FIN, ACK] Seq=88 Ack=1 Win=62780 Len=0 The initial FIN is being sent by the SMTP server. Maybe there's a client IP address restriction in the MTA on 85.213 that didn't get changed? -CW Jesus Alonso Rivas y Rivas wrote: >> 278 45.011168 148.244.85.213 148.244.85.212 TCP >> smtp > 1342 [FIN, ACK] Seq=88 Ack=1 Win=62780 Len=0 >> -- Christopher Wilson Information Systems Coordinator ISS Enterprise Systems The George Washington University 202-994-3878 [log in to unmask]