Bug#776094: dovecot-imapd: corrupts mailbox after trying to retrieve it (fwd)

[Santiago Vila]

I have just verified with IMAP commands. This is the procedure:

telnet localhost 143

and then type this:

A0001 CAPABILITY
A0002 LOGIN "bluser" "bluser"
A0003 SELECT "inbox-b"
A0004 EXPUNGE
A0005 FETCH 1:12 RFC822.SIZE
A0006 FETCH 1 RFC822.HEADER
A0007 FETCH 1 BODY.PEEK[TEXT]
A0008 STORE 1 +FLAGS (\Seen \Deleted)
A0009 EXPUNGE
A0010 FETCH 1 RFC822.HEADER
A0011 FETCH 1 BODY.PEEK[TEXT]
A0012 STORE 1 +FLAGS (\Seen \Deleted)
A0013 EXPUNGE
A0014 FETCH 1 RFC822.HEADER
A0015 FETCH 1 BODY.PEEK[TEXT]
A0016 STORE 1 +FLAGS (\Seen \Deleted)
A0017 EXPUNGE
A0018 FETCH 1 RFC822.HEADER
A0019 FETCH 1 BODY.PEEK[TEXT]
A0020 STORE 1 +FLAGS (\Seen \Deleted)
A0021 EXPUNGE
A0022 FETCH 1 RFC822.HEADER
A0023 FETCH 1 BODY.PEEK[TEXT]
A0024 STORE 1 +FLAGS (\Seen \Deleted)
A0025 EXPUNGE
A0026 FETCH 1 RFC822.HEADER
A0027 FETCH 1 BODY.PEEK[TEXT]
A0028 STORE 1 +FLAGS (\Seen \Deleted)
A0029 EXPUNGE
A0030 FETCH 1 RFC822.HEADER
A0031 FETCH 1 BODY.PEEK[TEXT]
A0032 STORE 1 +FLAGS (\Seen \Deleted)
A0033 EXPUNGE
A0034 FETCH 1 RFC822.HEADER
A0035 FETCH 1 BODY.PEEK[TEXT]
A0036 STORE 1 +FLAGS (\Seen \Deleted)
A0037 EXPUNGE
A0038 FETCH 1 RFC822.HEADER
A0039 FETCH 1 BODY.PEEK[TEXT]
A0040 STORE 1 +FLAGS (\Seen \Deleted)
A0041 EXPUNGE
A0042 FETCH 1 RFC822.HEADER
A0043 FETCH 1 BODY.PEEK[TEXT]
A0044 STORE 1 +FLAGS (\Seen \Deleted)
A0045 EXPUNGE
A0046 FETCH 1 RFC822.HEADER
A0047 FETCH 1 BODY.PEEK[TEXT]
A0048 STORE 1 +FLAGS (\Seen \Deleted)
A0049 EXPUNGE
A0050 FETCH 1 RFC822.HEADER
A0051 LOGOUT

After this, mbox folder inbox-b is corrupted, as the line saying

From: abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz at example.com

becomes

rstuvwxyzabcdefghijklmnopqrstuvwxyz at example.com


So: Could we please stop blaming fetchmail for this?
It's just the messenger.