On Fri, Jul 31, 2015 at 05:26:14PM -0400, Ben Doyle wrote:
> Hi all,
> 
> We recently caught opensmtp encoding a class of emails as quoted-printable,
> while the rest of our seemingly-similar messages went through unaltered.
> (This was a problem for us because clients like gmail don't seem to like
> quoted-printable much at all, or this incarnation of it, at least).
> 
> Is that conceivably expected behavior, for folks who know more than I, or
> should I report it as a bug?
> 
> If it's expected, tips about what triggers the behavior, and how it can be
> controlled, would be much appreciated.
> 
> Thanks!
> 

The daemon itself doesn't do encoding so:

1- either the message was encoded by the OpenSMTPD enqueuer;
2- or the message was encoded by whatever client was used to send mail;

Without logs I cannot guess which case it is.

Assuming the OpenSMTPD enqueuer was used, quoted-printable encoding gets
used when there is a line that exceeds a certain size and the MUA hasn't
provided an encoding of its own.

-- 
Gilles Chehade

https://www.poolp.org                                          @poolpOrg

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