One alternative is to migrate into sdbox format, in which this is supported


---Aki TuomiDovecot oy
-------- Original message --------From: Wolfgang Rosenauer 
<wrosena...@gmail.com> Date: 11/07/2018  18:14  (GMT+02:00) To: Timo Sirainen 
<t...@iki.fi> Cc: Dovecot Mailing List <dovecot@dovecot.org> Subject: Re: LMTP 
crashing heavily for my 2.2.36 installation 
follow up question.
Is there a commit which is reasonable to backport for me into the packages or 
is it too intrusive or based on heavily changed code?

Thanks, Wolfgang

On Wed, Jul 11, 2018 at 3:32 PM, Wolfgang Rosenauer <wrosena...@gmail.com> 
wrote:

On Wed, Jul 11, 2018 at 10:46 AM, Timo Sirainen <t...@iki.fi> wrote:
On 11 Jul 2018, at 8.41, Wolfgang Rosenauer <wrosena...@gmail.com> wrote:
> 

> I'm running 2.2.36 (as provided by openSUSE in their server:mail repository) 
> and at least at one of my systems LMTP is crashing regularly on certain 
> messages (apparently a lot of them).

> 

> Sometimes (but not always a backtrace is posted to the logs:

> 

> 2018-07-11T07:34:56.741848+02:00 saruman dovecot: lmtp(14690): Fatal: master: 
> service(lmtp): child 14690 killed with signal 11 (core dumps disabled)

> 2018-07-11T07:34:56.820474+02:00 saruman dovecot: lmtp(an007498): Panic: file 
> imap-bodystructure.c: line 116 (part_write_body_multipart): assertion failed: 
> (part->data != NULL)

..

> storage.so.0(mail_set_attachment_keywords+0x162) [0x7ff549773662]



Looks like it's because of the "mail_attachment_detection_options = 
add-flags-on-save" setting. What mailbox format do you use? It's currently 
broken with mbox and in v2.2.36 with Maildir (which was fixed in v2.3.2).



I'm indeed using maildir so this is a known issue and yes I use 
mail_attachment_detection_options=add-flags-on-save (or rather I tried to but 
now have to disable it). Not sure when I get to upgrade to 2.3.x.

Thanks, Wolfgang



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