[milters] Archive

Lists Index Date Thread Search

Article: 749
From: Marc Dirix
Date: 2005-11-11 08:18:16 -0500
Subject: Re: milter-date

Removal...........: milters-request@milter.info?subject=remove
More information..: http://www.milter.info/#Support
--------------------------------------------------------

Thanks!
I'll advise the badly configured mailserver to also change their setup.

Kind regards,

Marc Dirix


On Sun, Nov 06, 2005 at 10:26:48AM +0100, Anthony Howe wrote:
> Removal...........: milters-request@milter.info?subject=remove
> More information..: http://www.milter.info/#Support
> --------------------------------------------------------
> 
> Marc Dirix wrote:
> > I've come accross this notice in my maillog where milter-date gave falls
> > positiv (as seen from the user). Is this a milter-date problem or
> > a bad mailserver setup? The date time header is in "dutch"
> 
> The Date header can NOT be in dutch according to RFC 2822 section 3.3. 
> Date and Time Specification. Its explicitly defined to be in English.
> 
> http://www.rfc-editor.org/cgi-bin/rfcdoctype.pl?loc=RFC&letsgo=2822&type=http&file_format=txt
> 
> An MTA that specifies the day of the week in anything other than a 3 
> letter English abbreviation does not conform. An MUA that creates a 
> message with a Date: header where the day-of-week is in the user's 
> current locale does not conform either.
> 
> > Nov  4 10:55:14 beta milter-date[12650]: 04786 jA49t8RO018234: day of
> > the month is not a number
> 
> Hmm. This error message is misleading w.r.t. the actual error..
> 
> > Nov  4 10:55:14 beta sm-mta[18234]: jA49t8RO018234: Milter: data,
> > reject=550 5.7.1 " vr, 04 nov 2005 10:56:29 +0100" does not conform to

> > RFC 2822 section 3.3. Date and Time Specification
> 
> The above is clearly not correct; you cannot have a day-of-week name in 
> the user's locale and not the month. The Date: header is intended to be
> both human (by postmasters) and machine readable. If the Date: where 
> intended to be simply a display header for humans only (like teh 
> Subject:), then it could be formatted according to the users locale in 
> all manner of ways.
> 
> However, I'm willing to weaken (for the sake of my sanity) the RFC 2822 
> day-of-week parsing requirements ie. optional or non-English, since the 
> information could be considered supplemental. Its only utility is to 
> detect instances where a spammer would put something really bizarro in 
> the date header.
> 
> I've broke out the convertDateToGMT code into a test CLI.
> 
> BEFORE
> 
> $ convertDateToGMT.exe -S -v "vr, 04 nov 2005 10:56:29 +0100"
> convertDateToGMT: date=vr, 04 nov 2005 10:56:29 +0100
> convertDateToGMT: day-of-week missing or not english
> convertDateToGMT: "vr, 04 nov 2005 10:56:29 +0100" does not conform to 
> RFC 2822 section 3.3. Date and Time Specification
> 
> AFTER
> 
> $ convertDateToGMT.exe -v "vr, 04 nov 2005 10:56:29 +0100"
> convertDateToGMT: date=vr, 04 nov 2005 10:56:29 +0100
> convertDateToGMT: day-of-week missing or not english, ignoring
> convertDateToGMT: date= 04 nov 2005 10:56:29 +0100 day=-1 format=0
> convertDateToGMT: date= nov 2005 10:56:29 +0100 day=4
> convertDateToGMT: date=2005 10:56:29 +0100 month=10
> convertDateToGMT: date= 10:56:29 +0100 year=2005
> convertDateToGMT: date=:56:29 +0100 hour=10
> convertDateToGMT: date=:29 +0100 minute=56
> convertDateToGMT: date=+0100 second=29
> convertDateToGMT: date= zone=100
> convertDateToGMT: date= yday=307
> convertDateToGMT: date= time=1131098189
> 1131098189       "vr, 04 nov 2005 10:56:29 +0100"
> 
> There will be an update available later today.
> 
> -- 
> Anthony C Howe                                 +33 6 11 89 73 78
> http://www.snert.com/       ICQ:
7116561         AIM: Sir Wumpus
> 
> Sendmail Anti-Spam Solutions           http://www.snertsoft.com/
>                                              We Serve Your Server

Lists Index Date Thread Search