imap[xxx]: IOERROR: reading message: unexpected end of file

[Carlos Velasco]

>> My cyrus imap version is 2.5.10 and my SMTP is a postfix 3.1.4
>>
>> Apr 25 22:05:29 local6:err imap: imap[13453]: IOERROR: reading message: unexpected end of file
>>
>> Looking into imap logs I see these errors at the end. All are "6 NO System I/O error".
>> ===
>> PK
>> <1493150904<
>>> 1493150978>6 NO System I/O error
>>  
>> PK
>>
>>> 1493150760>6 NO System I/O error
>> ===
> 
> I have narrowed it to message_copy_strict.
> There is a mail related from 2007:
> https://lists.andrew.cmu.edu/pipermail/info-cyrus/2007-October/027320.html
> 
> But I'm not using NFS, it is ext4 in my case.

Ok. At the end it was a problem with Thunderbird. Fixed in TB 52.1.0

Ellie, I think you missed "message_copy_strict" in imap/messgage.c for issue #1926 (better error message than "IOERROR: reading message: unexpected end of file")

Regards,
Carlos Velasco