On Wed, Nov 26, 2008 at 01:58:25PM -0500, Victor Duchovni wrote:
> The space just before the final "/" should not be there. Postfix added
> Received headers (for network-originated traffic) match (PCRE):
>
> /^Received:
> [ ] from [ ] \S+ # Helo name
> [ ] \(\S+ [ ] \[\S+\]\) # Host name, IP address
> (\n\t\([^\n]*?\))* # TLS, SASL, ... annotations
> \n\t by [ ] mta\.example\.com # This mta's hostname
> [ ] \(Postfix\) # $mail_name setting from main.cf
> [ ] with [ ] \w+ # Protocol
> [ ] id [ ] \w+ # Queue-id
> (?:;\n\t|\n\tfor [ ]<.*?>;[ ])? # Single Recipient?
> \w{3}, # Weekday name
> [ ] [ \d]{2} # Day of month
> [ ] \w{3} # Month name
> [ ] \d{4} # Year
> [ ] (?:\d\d:){2}\d\d # Time of day
> [ ] [-+]\d{4} # TZ offset
> [ ] \(.*?\) # Timezone name
> $/sx
>
> Note the various "\n\t" occurences, the header is presented to
> header_checks with "\n\t" folding whitespace. On the network,
> this is sent as "\r\n\t".
Note, it turns out that Postfix PCRE tables don't fully support /x,
because Postfix un-folds the pattern to a single line before passing it
to the PCRE parser, so with the above, everything after the first comment
is ignored. You can still use /x to add whitespace, and Postfix removes
stand-alone comments that occupy a whole line, so a better version is:
/^Received:
# Helo name
[ ] from [ ] \S+
# Host name, IP address
[ ] \(\S+ [ ] \[\S+\]\)
# TLS, SASL, ... annotations
(?: \n\t\([^\n]*?\))*
# This mta's hostname
\n\t by [ ] mta\.example\.com
# $mail_name setting from main.cf
[ ] \(Postfix\)
# Protocol
[ ] with [ ] \w+
# Queue-id
[ ] id [ ] \w+
# Single Recipient?
(?:;\n\t|\n\tfor [ ]<.*?>;[ ])
# Weekday name
\w{3},
# Day of month
[ ] [ \d]{2}
# Month name
[ ] \w{3}
# Year
[ ] \d{4}
# Time of day
[ ] (?:\d\d:){2}\d\d
# TZ offset
[ ] [-+]\d{4}
# Timezone name
[ ] \(.*?\)
$/sx ACTION
The folding of the lookup key is perhaps undesirable, not sure whether
work to "fix" this is warranted for 2.6.
--
Viktor.
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