Hi, I was wondering if anyone could help with this error. Our mailservers have a high mail rate and I am new to qmail (SIGH, another newbie). Config: smtp store - queue the mail for clients then upon reciept of a dequeue request, smtp push the mail to the clients remote mail server. the symptoms: * Clients continually send dequeue requests from their remote mail servers to our mail servers. They get no mail delivery yet there are no obvious errors that they see. We get the following error in our maillog: qmail: 963870062.032644 delivery 320305: success: serialsmtp:_fatal:_SMTP_cannot_transfer_messages_with_partial_final_lines/se rialsmtp:_fatal:_SMTP_cannot_transfer_messages_with_partial_final_lines/seri alsmtp:_fatal:_SMTP_cannot_transfer _messages_with_partial_final_lines/maildirserial:_fatal:_making_no_progress, _giving_up/did_0+0+1/ * A qmail-qstat showed a growing queue, with the majority beloning to the dequeue user (dequeue requests). * The number of ports in SYN_RECV state escalated markedly I found that some of the mail messages themselves had not been terminated with a "\n", and once I appended "\n" to the end of the file the error disappeared for a few hours, and the clients reported sucessful mail delivery, but then the error returned and the clients no longer recieved their mail. Much of the mail like this was mailing list issue. Thanks, Gillian