1440090 - Double space converts to Q-marks

Status: RESOLVED DUPLICATE of bug 1435903

(Thunderbird :: Untriaged, defect)

Description

[Mark Harkey]

User Agent: Mozilla/5.0 (Windows NT 5.1; rv:52.0) Gecko/20100101 Firefox/52.0
Build ID: 20180118122319

Steps to reproduce:

I use double spaces between sentences.  When the recipient receives the email, every where there was a double space gets a double question mark.  If only one space is used between sentences, this issue does not occur.  Note that this issue just started happening in the last revision.


Actual results:

Here is an example.  I send this sentence:  Now is the time.  For all good men.  To come to the aid.  Of their country.

This is what the recipient receives:  Now is the time.?? For all good men.?? To come to the aid.?? Of their country.


Expected results:

I should get what is sent.  The double space triggers a double question mark for some reason and it happens when the message is sent.  It should not do this.

Thunderbird version in use - 52.6.0

Comment 1

[Jorg K (CEST = GMT+2)]

This is a current problem with all e-mail services provided by AT&T, Yahoo, BellSouth, etc.
Further reading:
https://forums.yahoo.net/t5/Sending/Yahoo-SMTP-server-advertising-8bit-capability-incorrectly-and/m-p/460316

Workaround: Set preference mail.strictly_mime to true.

Note: Multiple spaces get converted to non-breaking spaces and they get transmitted as 8bit characters which don't get transmitted properly.