7 and later
As sendmail evolves, it will continue to add new abilities to the qf file. To protect old
versions of sendmail from wrongly misinterpreting new configuration files, the V line has
been introduced. Note that prior to V8.7 sendmail there was no V line. The V line, and qf
file version numbers for more modern implementations of sendmail, are shown in
Table 11-8.
If the version found in a qf file is greater than that currently supported by sendmail, th e
following error will be printed if in verbose mode:
Version number in qf (bad) greater than max (max)
* Th envi(1) editor uses the same file locking as sendmail and so can safely be used to edit qf files.
Table 11-8. qf file version numbers
qf version sendmail versions
V1 V8.7.5 and earlier
V2 V8.7.6 through V8.9.3
V4 V8.10 through V8.11
V5 V8.10 through V8.11 with _FFR_QUEUEDELAY defined
V6 V8.12
V7 V8.12 with _FFR_QUEUEDELAY defined
V8 V8.13 added support for Queue Quarantining
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458 | Chapter 11: Manage the Queue
and the following message will be logged:
Losing qf file unsupported queue file version
The bad qf file will then be turned into a Qf file (marked as lost).
11.12.21 Z line
DSN ENVID envelope identifier V8.7 and later
The MAIL ESMTP command can optionally be followed by an RFC1891 ENVID envelope
identifier:
MAIL From:
ENVID=envelopeID
ENVID is used to propagate a consistent envelope identifier (distinct from the Message-ID:
header, ?§25.
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