Peter Volkov:
> ? ??, 10/12/2014 ? 14:35 -0500, Wietse Venema ?????:
> > Peter Volkov:
> > > We use smtplib in python to send mail through postfix. As I saw from
> > > tcpdump smtplib does not set "Date:" field, so I suspect postfix does
> > > that. Now, as I see postfix sets date as:
> > > Date: Wed, 10 Dec 2014 05:40:50 -0800 (PST)
> >
> > The (PST) is a comment. Surely, their parser understands how comments
> > work.
>
> Thanks Wietse! This helped me to understand what CFWS in rfc stands for.
> Looks like some spam filter is too strict so I've reported this issue to
> their postmaster.
Thanks. For posteriority, the date-time is defined as:
date-time = [ day-of-week "," ] date time [CFWS]
date = day month year
time = time-of-day zone
CFWS = (1*([FWS] comment) [FWS]) / FWS
Source: RFC 2822 and RFC 5322. I omitted some rules for brevity.
If the filter does not allow comments, then it is not too strict,
instead it fails to implement part of the standard.
Wietse
