[Dovecot] dovecot Digest, Vol 91, Issue 18
ajb2 at mssl.ucl.ac.uk
Mon Nov 8 14:47:43 EET 2010
> From: Timo Sirainen <tss at iki.fi>
> Subject: Re: [Dovecot] emails getting mangled when dragging from
> Exchange account to IMAP shared folders
> On Wed, 2010-11-03 at 16:18 -0700, Scott Goodwin wrote:
>> FYI, I got rawlog working and it shows the same break in the raw logs as in
>> the broken headers.
>> Below is a snippet from the rawlog (names and other identifiers redacted).
>> The offending sequence is always in the References headers section, and you
>> can see the line breaks there that show this. So it sounds like this can't
>> be an issue with Dovecot, am I right?
> Yeah, sounds like Outlook breaks with huge headers. That's one huge
> References header you have.
Summarising mail standards (WRT headers)
There is a limit of 4096 characters per line.
If Outlook is breaking at less than that it's a bug.
If the References: line is longer than that then it should have been
truncated by the sending MUA - there's no provision for multiline
References headers (which are a non-standardised import from Usenet anyway).
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