[Bug 233990] Re: Thunderbird's mdn (receipt) message may contain 822bis-violating bare lf which is rejected by Qmail

André Pirard A.Pirard at ulg.ac.be
Sat Dec 26 15:46:47 UTC 2009


** Description changed:

+ C de-Avillez:
  TESTED: Thunderbird 2.0.0.23 (Karmic)
                Thunderbird Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.7pre) Gecko/20091214 Shredder/3.0.1pre (MozillaTeam PPA)
  
  WORKAROUND: Do not use accented characters on the email's display name.
  
+ André Pirard: Update:
+ As I mentioned it before, in addition to requesting people to make spelling mistakes, this so-called WORKAROUND only works for sent e-mail and only when the error comes from the From: line, so that the person you send the e-mail to did not encounter the error if ever he runs Thunderbird through Qmail.
+ It does not work at all if the error comes from the Subject line or for any case of e-mail being received.
+ 
+ Original Report:
  Thunderbird 2.0.0.14 sends the attached Receipt message.
  (file as stolen from /tmp)
  qmail-ldap-1.03 complains that it contains a "bare lf".
  See attached dialog box & http://cr.yp.to/docs/smtplf.html
  Dialog box is acknowledged.
  Thunderbird just disappears.
  Receipt never arrives and Thunderbird forgets about it.
  Apport on strike but segfaults spotted, see attached syslog.
  
  Update :
  Please note that the (main) point of this report is *not* a Thunderbird crash but qmail's refusal to transmit the message, which is absolutely repeatable.
  The crash itself is not repeatable and may or may not be a side effect.
  Thunderbird most often exhibits the bare lf problem without crashing.
  I changed the title of this report accordingly.
  The whole story is in the attached mdnmsg file.
  
  Update 2 :
  
  1) I've been accused to have made a bad report because I did no follow :
  http://help.ubuntu.com/community/ReportingBugs#Writing a useful report
  
  2) C de-Avillez wants to see the bare linefeeds but he refuses to
  download the file and run grep.
  
  Let us recall that everything is in the mdnmsg file which will show the problem to a developer in 1 minute.
  But I will spend 2 hour instead to administratively unlock this case and I do hope it will.
  
  Let's go.
  
  > Writing a useful report
  >
  >    1. What you expected to happen
  >
     1.  switch on the HP Compaq 6270s computer (or any?)
     2. launch Ubuntu 8.10 (or any?)
     3. launch Thunderbird 2.0.0.14 (or any?)
     4. write the message contained in the attached mdn file
     5. send that message
     6. display my IMAP INBOX
     7. find that message
     8. open it
     9. click Yes to send the Return Receipt
    10. read the message and be happy
    11. close the message
    12. display the IMAP INBOX again
    13. find the Return Receipt contained in the attached mdn file
    14. open the Return Receipt
    15. make sure by reading the Receipt that I read the message
    16. close the Receipt
    17. close Thunderbird
    18. shutdown the computer
    19. watch the TV
  >
  >    2. What actually happened
  >
     1. switch on the HP Compaq 6270s computer
     2. launch Ubuntu 8.10
     3. launch Thunderbird 2.0.0.14
     4. write the message contained in the attached mdn file
     5. send that message
     6. display my IMAP INBOX
     7. find that message
     8. open it
     9. click Yes to send the Return Receipt (which should be sent AFTER reading the message BTW)
    10. receive the error message in the attached Screenshot-Alert.png
    11. read the error message and be unhappy
    12. save /tmp/mdnmsg for bug reporting sake
    13. close the error message
    14. read the message and be happy anyway
    15. display the IMAP INBOX of the sender
    16. could not find any Return Receipt and never will
    17. sent mdnmsg and Screenshot-Alert.png to bugs.launchpad
    18. told them that mdnmsg contains the message I sent
    19. and the Receipt that failed to be sent
    20. and that Screenshot-Alert contains the error message
    21. read that they don't understand and that I'm a bad reporter
    22. wanted to quit the business
    23. wrote this instead on request
    24. did not shutdown the computer
    25. did not watch the TV
  
  >    1. The minimal series of steps necessary to make it happen, where
  step 1 is "start the program"
  
     1. "start the program"
     2. in the correct environment, send a similar message to the one contained in mdnmsg
     3. receive and read the message, try to send the Receipt, you must get an error if it goes trough qmail
  
  Alternative
  
  > 1. The minimal series of steps necessary to make it happen, where step
  1 is "start the program"
  
     1.  "start the program"
     2. run TB in session A with e-mail account A requesting Return Receipts
     3. create Ubuntu user profile T
     4. in T, create a TB account T with a provider using SSL and/or, best, Qmail
     5. !!! never have TB "remember" this SSL password !!!
     6. from A, send an e-mail to T (requesting RR)
     7. check mail in T, open the e-mail, the SSL password is asked, do no answer yet
-        or, without SSL and with Qmail an Alert box must be acknowledged in case of error
+        or, without SSL and with Qmail an Alert box must be acknowledged in case of error
     8. make a copy of /tmp/mdnmsg, that's a copy of the Return Receipt being sent
     9. now or later, run the grep command on mdnmsg to spot bare linefeeds
    10. answer SSL password or ack Alert and see if Return Receipt is sent
    11. repeat from 6 with various test cases
  
  Note : to determine the "correct environment", you will have to read mdnmsg first.
  After reading it, you will most probably understand the bug and not want to "make it happen".
  
  > Fill in the description field with as much information as you can,
  including the release of Ubuntu you are using and steps for someone else
  to recreate the bug. It is better to have too much information in the
  description than not enough.
  
  Is this enough information?
  If yo need anything else, please be specific.
  
  > Add supporting attachments to explain or help others reproduce your
  bug. This might include a screenshot or video capture of the problem or
  a sample document that triggers the fault. To add an attachment to the
  bug use the Include an attachment section of the bug form. Additional
  attachments, if necessary, can be added after the bug is reported via
  Add a comment/attachment at the bottom of the page.
  
  Risking ro be repetitive : everything is in mdnmsg.
  I sent a screenshot from the very start and the answer to s.o.'s "can you please send one" is "look twice".
  About sending a video, the answer is : nothing is moving, especially not this bug report.
  
  Regarding the question "what are bare linefeed" or "where are they", whatever that means :
  I fetched and re-uploaded the various mdnmsg samples with numbered names.
  And I ran the grep command as follows, remark below.
  
  $ grep -P '[^\r]\n' mdnmsg0.eml | tee /dev/tty | hd
  To: =?UTF-8?B?QW5kcsOpIFBpcmFyZA==?=
   <A_Pirard at hotmail.com>
  00000000  54 6f 3a 20 3d 3f 55 54  46 2d 38 3f 42 3f 51 57  |To: =?UTF-8?B?QW|
  00000010  35 6b 63 73 4f 70 49 46  42 70 63 6d 46 79 5a 41  |5kcsOpIFBpcmFyZA|
  00000020  3d 3d 3f 3d *0a* 20 3c 41  5f 50 69 72 61 72 64 40  |==?=. <A_Pirard@|
  00000030  68 6f 74 6d 61 69 6c 2e  63 6f 6d 3e 0d 0a        |hotmail.com>..|
  0000003e
  
  $ grep -P '[^\r]\n' mdnmsg1.eml | tee /dev/tty | hd
  To: =?UTF-8?B?QW5kcsOpIFBpcmFyZA==?=
   <A_Pirard at hotmail.com>
  00000000  54 6f 3a 20 3d 3f 55 54  46 2d 38 3f 42 3f 51 57  |To: =?UTF-8?B?QW|
  00000010  35 6b 63 73 4f 70 49 46  42 70 63 6d 46 79 5a 41  |5kcsOpIFBpcmFyZA|
  00000020  3d 3d 3f 3d *0a* 20 3c 41  5f 50 69 72 61 72 64 40  |==?=. <A_Pirard@|
  00000030  68 6f 74 6d 61 69 6c 2e  63 6f 6d 3e 0d 0a        |hotmail.com>..|
  0000003e
  
  $ grep -P '[^\r]\n' mdnmsg2.eml | tee /dev/tty | hd
  Subject: Return Receipt (displayed) - =?UTF-8?B?RG9zc2llciBGMjAwOTA0MDEwMCAgIHLDqWYuIDogTE0v?=
   =?UTF-8?B?MjAwOS8wOTUy?=
  00000000  53 75 62 6a 65 63 74 3a  20 52 65 74 75 72 6e 20  |Subject: Return |
  00000010  52 65 63 65 69 70 74 20  28 64 69 73 70 6c 61 79  |Receipt (display|
  00000020  65 64 29 20 2d 20 3d 3f  55 54 46 2d 38 3f 42 3f  |ed) - =?UTF-8?B?|
  00000030  52 47 39 7a 63 32 6c 6c  63 69 42 47 4d 6a 41 77  |RG9zc2llciBGMjAw|
  00000040  4f 54 41 30 4d 44 45 77  4d 43 41 67 49 48 4c 44  |OTA0MDEwMCAgIHLD|
  00000050  71 57 59 75 49 44 6f 67  54 45 30 76 3f 3d *0a* 20  |qWYuIDogTE0v?=. |
  00000060  3d 3f 55 54 46 2d 38 3f  42 3f 4d 6a 41 77 4f 53  |=?UTF-8?B?MjAwOS|
  00000070  38 77 4f 54 55 79 3f 3d  0d 0a                    |8wOTUy?=..|
  0000007a
  
  $ grep -P '[^\r]\n' mdnmsg3.eml | tee /dev/tty | hd
  Subject: Return Receipt (displayed) - =?ISO-8859-1?Q?Re:_WiFi_=28liaison_de_donn=E9es_par_radio=29_pou?=
   =?ISO-8859-1?Q?r_Th=E9r=E8se,_3*20?=
  00000000  53 75 62 6a 65 63 74 3a  20 52 65 74 75 72 6e 20  |Subject: Return |
  00000010  52 65 63 65 69 70 74 20  28 64 69 73 70 6c 61 79  |Receipt (display|
  00000020  65 64 29 20 2d 20 3d 3f  49 53 4f 2d 38 38 35 39  |ed) - =?ISO-8859|
  00000030  2d 31 3f 51 3f 52 65 3a  5f 57 69 46 69 5f 3d 32  |-1?Q?Re:_WiFi_=2|
  00000040  38 6c 69 61 69 73 6f 6e  5f 64 65 5f 64 6f 6e 6e  |8liaison_de_donn|
  00000050  3d 45 39 65 73 5f 70 61  72 5f 72 61 64 69 6f 3d  |=E9es_par_radio=|
  00000060  32 39 5f 70 6f 75 3f 3d  *0a* 20 3d 3f 49 53 4f 2d  |29_pou?=. =?ISO-|
  00000070  38 38 35 39 2d 31 3f 51  3f 72 5f 54 68 3d 45 39  |8859-1?Q?r_Th=E9|
  00000080  72 3d 45 38 73 65 2c 5f  33 2a 32 30 3f 3d 0d 0a  |r=E8se,_3*20?=..|
  00000090
  
  $ grep -P '[^\r]\n' mdnmsg4.eml | tee /dev/tty | hd
  Subject: Return Receipt (displayed) - Joyeux =?UTF-8?B?Tm/Dq2wgOiBVbiDDqXRvbm5hbnQgb3JkaSBzb3VzIGxlIHNh?=
   =?UTF-8?B?cGlu?=
  To: =?UTF-8?B?QW5kcsOpIFBpcmFyZA==?=
   <A_Pirard at hotmail.com>
  00000000  53 75 62 6a 65 63 74 3a  20 52 65 74 75 72 6e 20  |Subject: Return |
  00000010  52 65 63 65 69 70 74 20  28 64 69 73 70 6c 61 79  |Receipt (display|
  00000020  65 64 29 20 2d 20 4a 6f  79 65 75 78 20 3d 3f 55  |ed) - Joyeux =?U|
  00000030  54 46 2d 38 3f 42 3f 54  6d 2f 44 71 32 77 67 4f  |TF-8?B?Tm/Dq2wgO|
  00000040  69 42 56 62 69 44 44 71  58 52 76 62 6d 35 68 62  |iBVbiDDqXRvbm5hb|
  00000050  6e 51 67 62 33 4a 6b 61  53 42 7a 62 33 56 7a 49  |nQgb3JkaSBzb3VzI|
  00000060  47 78 6c 49 48 4e 68 3f  3d *0a* 20 3d 3f 55 54 46  |GxlIHNh?=. =?UTF|
  00000070  2d 38 3f 42 3f 63 47 6c  75 3f 3d 0d 0a 54 6f 3a  |-8?B?cGlu?=..To:|
  00000080  20 3d 3f 55 54 46 2d 38  3f 42 3f 51 57 35 6b 63  | =?UTF-8?B?QW5kc|
  00000090  73 4f 70 49 46 42 70 63  6d 46 79 5a 41 3d 3d 3f  |sOpIFBpcmFyZA==?|
  000000a0  3d *0a* 20 3c 41 5f 50 69  72 61 72 64 40 68 6f 74  |=. <A_Pirard at hot|
  000000b0  6d 61 69 6c 2e 63 6f 6d  3e 0d 0a                 |mail.com>..|
  000000bb
  
  $ grep -P '[^\r]\n' mdnmsg5.eml | tee /dev/tty | hd
  To: =?UTF-8?B?QW5kcsOpIFBpcmFyZA==?=
   <A_Pirard at hotmail.com>
  00000000  54 6f 3a 20 3d 3f 55 54  46 2d 38 3f 42 3f 51 57  |To: =?UTF-8?B?QW|
  00000010  35 6b 63 73 4f 70 49 46  42 70 63 6d 46 79 5a 41  |5kcsOpIFBpcmFyZA|
  00000020  3d 3d 3f 3d *0a* 20 3c 41  5f 50 69 72 61 72 64 40  |==?=. <A_Pirard@|
  00000030  68 6f 74 6d 61 69 6c 2e  63 6f 6d 3e 0d 0a        |hotmail.com>..|
  0000003e
  
  $ grep -P '[^\r]\n' mdnmsgN0.eml | tee /dev/tty | hd
  
  $ grep -P '[^\r]\n' mdnmsgN1.eml | tee /dev/tty | hd
  To: =?UTF-8?B?QW5kcsOpIFBpcmFyZA==?=
   <A.Pirard at ulg.ac.be>
  00000000  54 6f 3a 20 3d 3f 55 54  46 2d 38 3f 42 3f 51 57  |To: =?UTF-8?B?QW|
  00000010  35 6b 63 73 4f 70 49 46  42 70 63 6d 46 79 5a 41  |5kcsOpIFBpcmFyZA|
  00000020  3d 3d 3f 3d *0a* 20 3c 41  2e 50 69 72 61 72 64 40  |==?=. <A.Pirard@|
  00000030  75 6c 67 2e 61 63 2e 62  65 3e 0d 0a              |ulg.ac.be>..|
  0000003c
  
  $ grep -P '[^\r]\n' mdnmsgN2.eml | tee /dev/tty | hd
  Subject: Return Receipt (displayed) - Joyeux =?UTF-8?B?Tm/Dq2wgOiBVbiDDqXRvbm5hbnQgb3JkaSBzb3VzIGxlIHNh?=
   =?UTF-8?B?cGlu?=
  00000000  53 75 62 6a 65 63 74 3a  20 52 65 74 75 72 6e 20  |Subject: Return |
  00000010  52 65 63 65 69 70 74 20  28 64 69 73 70 6c 61 79  |Receipt (display|
  00000020  65 64 29 20 2d 20 4a 6f  79 65 75 78 20 3d 3f 55  |ed) - Joyeux =?U|
  00000030  54 46 2d 38 3f 42 3f 54  6d 2f 44 71 32 77 67 4f  |TF-8?B?Tm/Dq2wgO|
  00000040  69 42 56 62 69 44 44 71  58 52 76 62 6d 35 68 62  |iBVbiDDqXRvbm5hb|
  00000050  6e 51 67 62 33 4a 6b 61  53 42 7a 62 33 56 7a 49  |nQgb3JkaSBzb3VzI|
  00000060  47 78 6c 49 48 4e 68 3f  3d *0a* 20 3d 3f 55 54 46  |GxlIHNh?=. =?UTF|
  00000070  2d 38 3f 42 3f 63 47 6c  75 3f 3d 0d 0a           |-8?B?cGlu?=..|
  0000007d
  
  $ grep -P '[^\r]\n' mdnmsgN3.eml | tee /dev/tty | hd
  Subject: Return Receipt (displayed) - Joyeux =?UTF-8?B?Tm/Dq2wgOiBVbiDDqXRvbm5hbnQgb3JkaSBzb3VzIGxlIHNh?=
   =?UTF-8?B?cGlu?=
  To: =?UTF-8?B?QW5kcsOpIFBpcmFyZA==?=
   <A.Pirard at ulg.ac.be>
  00000000  53 75 62 6a 65 63 74 3a  20 52 65 74 75 72 6e 20  |Subject: Return |
  00000010  52 65 63 65 69 70 74 20  28 64 69 73 70 6c 61 79  |Receipt (display|
  00000020  65 64 29 20 2d 20 4a 6f  79 65 75 78 20 3d 3f 55  |ed) - Joyeux =?U|
  00000030  54 46 2d 38 3f 42 3f 54  6d 2f 44 71 32 77 67 4f  |TF-8?B?Tm/Dq2wgO|
  00000040  69 42 56 62 69 44 44 71  58 52 76 62 6d 35 68 62  |iBVbiDDqXRvbm5hb|
  00000050  6e 51 67 62 33 4a 6b 61  53 42 7a 62 33 56 7a 49  |nQgb3JkaSBzb3VzI|
  00000060  47 78 6c 49 48 4e 68 3f  3d *0a* 20 3d 3f 55 54 46  |GxlIHNh?=. =?UTF|
  00000070  2d 38 3f 42 3f 63 47 6c  75 3f 3d 0d 0a 54 6f 3a  |-8?B?cGlu?=..To:|
  00000080  20 3d 3f 55 54 46 2d 38  3f 42 3f 51 57 35 6b 63  | =?UTF-8?B?QW5kc|
  00000090  73 4f 70 49 46 42 70 63  6d 46 79 5a 41 3d 3d 3f  |sOpIFBpcmFyZA==?|
  000000a0  3d *0a* 20 3c 41 2e 50 69  72 61 72 64 40 75 6c 67  |=. <A.Pirard at ulg|
  000000b0  2e 61 63 2e 62 65 3e 0d  0a                       |.ac.be>..|
  
  We have now saved a developer 10 minutes by telling that what he will find in the mdnmsg file is that a bare linefeed occurs when an encoded header line is split.  We could lose a few more hours trying to find if this occurs only to mdn messages, only to UTF encoding etc... but a developer will make all these findings from the code right away.
  I've just counted that in the time I've spent for this bug alone, I would have helped solving 15 bugs at the rate I've just met with another recent report (2 days and 4 hours from bug filing to fix on distribution server).
  
  Thanks to all for the Ubuntu delight and may Ubuntu be with you and with even more people over the years.
  Merry Xub^H^Hmas and Happy New Year.

-- 
Thunderbird's mdn (receipt) message may contain 822bis-violating  bare lf which is rejected by Qmail
https://bugs.launchpad.net/bugs/233990
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