sendmail, 4th Edition

The mail.local Command-Line Switches

The mail.local program has a small set of command-line switches that modify its behavior. They are summarized in Table 10-4, and detailed in the sections that follow.

Table 10-4. The mail.local program’s switches

Switch	§	Description
−7	−7 on page 361	Don’t advertise 8BITMIME in LMTP.
-b	-b on page 362	Mailbox over quota error is permanent, not temporary.
-d	-d on page 362	Allow old-style -d execution.
-D	-D on page 362	Specify mailbox database type.
-f	-f on page 363	Specify the envelope sender.
-h	-h on page 363	Store mail in user’s home directory.
-l	-l (lowercase L) on page 364	Turn on LMTP mode.
-r	-r on page 364	Specify the envelope sender (deprecated).

If you want to modify any of the command-line switches given to mail.local by sendmail, you can do so with the LOCAL_MAILER_ARGS mc configuration macro, which must follow the FEATURE(local_lmtp). For example:

FEATURE(`local_lmtp')
define(`LOCAL_MAILER_ARGS', `mail.local −l −7')

Here, we have added a −7 to the default -l switch.

Not all switches are suitable for all installations. Review the following descriptions to decide which ones you need.

−7

Don’t advertise 8BITMIME in LMTP mail.local command-line switch

Ordinarily, when mail is delivered using LMTP, the LMTP conversation begins like this:

220 yourhost LMTP ready                 ← mail.local sends
>>> LHLO yourhost.your.domain           ← sendmail sends
250-yourhost                            ← mail.local sends
250-8BITMIME                            ← note 250-ENHANCEDSTATUSCODES 250 PIPELINING ...