HP-UX Mailing Services Administrator's Guide (B2355-91064)

The first entry is a message with queue ID h3TA9Bb29701 and a size of 86 bytes. The
message arrived in the queue on Wednesday, February 9, at 7:08 a.m. The sender was
janet. She sent a message to the recipients [e-mail] and
[e-mail]. Sendmail has already attempted to route the message, but the
message remains in the queue because its SMTP connection was refused. This usually
means that the SMTP server is temporarily not running on the remote host, but it also
occurs if the remote host never runs an SMTP server. Sendmail attempts to deliver this
message the next time the mail queue is processed.
Two other messages in the queue are also routed for delivery the next time the mail
queue is processed.
If mailq is run in verbose mode (with the -v option), then when it prints the queue,
it will also show the priority of each queued message.
Files in the Mail Queue
The files that Sendmail creates in the mail queue all have names of the following format:
ymdhmsrXXXXX
where
y – Denotes the year
m – Denotes the month
d – Denotes the day
h – Denotes hour
m – Denotes minute,
s – Denotes second
r – Denotes a random number
XXXXX – Denotes a 5-digit number that is the process ID of the process creating the
queue entry.
A file whose name begins with df is a data file. The message body, excluding the
header, is kept in this file.
A file whose name begins with qf is a queue-control file, which contains the information
necessary to process the job.
A file whose name begins with xf is a transcript file. This file is normally empty while
a piece of mail is in the queue. If a failure occurs, a transcript of the failed mail
transaction is generated in this file.
The queue-control file (type qf) is structured as a series of lines, each beginning with
a letter that defines the content of the line. Lines in queue-control files are described
in Table 2-8.
Troubleshooting Sendmail 99