sendmail 8.13 Companion

Chapter 11. Manage the Queue

Mail messages can be either delivered immediately or held for later delivery. Held messages are referred to as queued. They are placed into either a single holding directory (usually called mqueue) or several directories from which they are later delivered.

What’s New with V8.13

• The qf file’s V line has been bumped to V8 in support of queue quarantining (Section 11.1.1 ^[V8.13]).

• Queue quarantining is now officially supported (Section 11.1.2 ^[V8.13]).

• The qf file’s new q line lists the quarantine reason (Section 11.1.5 ^[V8.13]).

• You may now manage lost (Qf file) envelopes (Section 11.1.6 ^[V8.13]).

• Tunable queue-processing delays (Section 11.1.4 ^[V8.13]).

• The new confTO_QUEUERETURN_DSN mc macro (see Section 4.1.3 ^[V8.13]).

• The new confTO_QUEUEWARN_DSN mc macro (see Section 4.1.4 ^[V8.13]).

The qf File’s V Line

The V line (11.11.19^[3ed]) in the qf file (11.2.5^[3ed]) corresponds to the version of sendmail that created it. Table 11-1 compares V line qf file versions to corresponding sendmail versions.

Table 11-1. Queue qf file versions

V version	sendmail version
1	8.6 and earlier
2	8.7 and 8.8
3	8.9
4	8.10 and 8.11 built with -D_FFR_QUEUEDELAY not defined
5	8.10 and 8.11 built with -D_FFR_QUEUEDELAY defined
6	8.12 built with -D_FFR_QUEUEDELAY not defined
7	8.12 built with -D_FFR_QUEUEDELAY defined
8	8.13

Note that the qf file’s V8 line corresponds to V8.13 sendmail, which added official support for queue quarantining.

Queue Quarantining ...