Sun Microsystems Sun Workstation 100U System Manager's Manual page 340

SendmalllD.tallatlon aDd
ape ••
tloa Guld. 10
file.
4.1.1. M . . . . .
timeout.
Arter sittinl in the queue lor a lew days, a mess8le wiD time out. This is to
insure that at least the sender is aware
01
the inability
to
send a meaale. The timeout
is typically set to three days.
This timeout is set usinl the T option in the
configuration file.
The time of submission is set in the queue, rather than the amount of time left
until timeout.
As
a result, you
CaD
8ush mesaalel that have beeD lumpnl lor a short
period by runninl the queue witb a short messale timeout. For example,
lusr llib/sendmail -oTld -q
will run the queue and 8ush anythinl that is one day old.
4.2. DeUvel'7' Mode
There are a number of delivery modes tbat ,entlmail can operate in, set by tbe "d"
configuration option. These modes specify how quickly mail will be delivered. Lepl
modes are:
i deliver interactively (synchronously)
b deliver in background (asynchronously)
q queue only (don't deliver)
There are tradeoffs. Mode "i" passes the maximum amouDt of informatioD to the lender,
but is hardly ever necessary. Mode "q" puts the minimum
load
on your machine, but
means that delivery may be delayed for up to the queue inte"aI. Mode "b" is probably a
good compromise. However, this mode
CaD
cause larle numbers of proeesses if you have a
mailer that takes a lonl time to deliver a messaae.
4.3. LOS Level
The level or logging can be set for ,entlmtJil. The default usinl a standard
configuration table is level 9. The levels
are u
fonows:
o
No logging.
1
Major problems only.
2 Message collections and railed deliveries.
3 Successful deliveries.
4 Messages being defered (due to a host beinl down, etc.).
5 Normal message queueups.
6 Unusual but benign incidents, e.I., tryinl to proeess a locked queue file.
9
Log internal queue id to external message id mappinls. This can be useful for trac-
ing
a message as it travels between several
hosts.
12
Several messages that are basically only 01 interest when debuginl.
16 Verbose information regardinl the queue.
4.4. FUe Mode.
There are a number of files that may have a number
or
modes. The modes depend
on what functionality you want and the level
or
security you require.
4.4.1. To Buld
01'
Dot to Buldf
SendmtJiI can safely be made setuid
to
root. At the point where it is about
to
exec(2)
a mailer, it checks
to
6ee
if
the userid is zero;
if
80,
it resets the userid and
VenloD 4.1
Lad Mod 8/10/81