[Tickets #10531] 76 char line breaking causes gmail's smtp server to reject mail

[bugs at horde.org]

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Ticket URL: http://bugs.horde.org/ticket/10531
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  Ticket             | 10531
  Created By         | q0107 at cuba.ionum.ch
  Summary            | 76 char line breaking causes gmail's smtp server to
                     | reject mail
  Queue              | IMP
  Version            | Git master
  Type               | Bug
  State              | Unconfirmed
  Priority           | 3. High
  Milestone          |
  Patch              |
  Owners             |
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q0107 at cuba.ionum.ch (2011-09-19 07:57) wrote:

gmail's smtp servers check mail scrictly for rfcs, so mal formated  
mails are bounced. quoted-printable mails must not exeed line length  
over 76 chars.

if a line has exactly 76 chars and ends with a point and this line get  
a quote-prefix (like '>') this point goes (as a single char) to the  
next line. but a single point on a line marks the end of the mail, so  
gmail thinks that this mail violates mail-rfcs

original mail line [76 chars]:

Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy ei.

in a reply, the above mail line looks like this:

> Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy ei
.