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YZ d S( s Maildir pre-queue runner.
Most MTAs can be configured to deliver messages to a `Maildir'[1]. This
runner will read messages from a maildir's new/ directory and inject them into
Mailman's qfiles/in directory for processing in the normal pipeline. This
delivery mechanism contrasts with mail program delivery, where incoming
messages end up in qfiles/in via the MTA executing the scripts/post script
(and likewise for the other -aliases for each mailing list).
The advantage to Maildir delivery is that it is more efficient; there's no
need to fork an intervening program just to take the message from the MTA's
standard output, to the qfiles/in directory.
[1] http://cr.yp.to/proto/maildir.html
We're going to use the :info flag == 1, experimental status flag for our own
purposes. The :1 can be followed by one of these letters:
- P means that MaildirRunner's in the process of parsing and enqueuing the
message. If successful, it will delete the file.
- X means something failed during the parse/enqueue phase. An error message
will be logged to log/error and the file will be renamed <filename>:1,X.
MaildirRunner will never automatically return to this file, but once the
problem is fixed, you can manually move the file back to the new/ directory
and MaildirRunner will attempt to re-process it. At some point we may do
this automatically.
See the variable USE_MAILDIR in Defaults.py.in for enabling this delivery
mechanism.
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^ # start of string
(?P<listname>[^+@]+?) # listname@ or listname-subq@ (non-greedy)
(?: # non-grouping
- # dash separator
(?P<subq> # any known suffix
admin|
bounces|
confirm|
join|
leave|
owner|
request|
subscribe|
unsubscribe
)
)? # if it exists
[+@] # followed by + or @
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