child killed by signal 6

[Peter Nabbefeld]

Hello,

from time to time I keep getting problems with some emails causing
signal 6. I've already reported those, but it seems not to be easy to
find the cause. From the logs, it seems to occur in sieve implementation.

I've checked the email envelopes tody by accident, probably this part of
my telnet session might help:

a11 fetch 1 all
* 1 FETCH (RFC822.SIZE 16750 INTERNALDATE "22-May-2020 05:02:34 +0000"
ENVELOPE ("Fri, 22 May 2020 03:46:54 +0000" "RE: Http2 tomact server
taking time in responding when 1st StreamId is a large integer value
like 2147483641" (("Prateek Kohli" NIL "prateek.kohli"
"ericsson.com.INVALID")) (("Prateek Kohli" NIL "prateek.kohli"
"ericsson.com.INVALID")) (("Tomcat Users List" NIL "users"
"tomcat.apache.org")) (("Tomcat Users List" NIL "users"
"tomcat.apache.org")) NIL NIL
"<d778507f-306b-5395-b583-fc1f2651431d at apache.org>" "
<DB7PR07MB40285E61F0731810A615E3FB92B40 at DB7PR07MB4028.eurprd07.prod.outlook.com>")
FLAGS (\Seen))
a11 OK FETCH completed

a12 fetch 2 all
* 2 FETCH (RFC822.SIZE 21146 INTERNALDATE "22-May-2020 06:39:54 +0000"
ENVELOPE ("Fri, 22 May 2020 06:39:35 +0000" "RE: RST on TCP level sent
by Tomcat" (("Arshiya Shariff" NIL "arshiya.shariff"
"ericsson.com.INVALID")) (("Arshiya Shariff" NIL "arshiya.shariff"
"ericsson.com.INVALID")) (("Tomcat Users List" NIL "users"
"tomcat.apache.org")) (("Tomcat Users List" NIL "users"
"tomcat.apache.org")) (("markt at apache.org" NIL "markt" "apache.org")("M
Venkata Pratap M" NIL "m.m.venkata.pratap" "ericsson.com")) NIL "
<AM7PR07MB6561761FA78F23F5AAF398399FB70 at AM7PR07MB6561.eurprd07.prod.outlook.com>"
"
<AM7PR07MB65615CD03F422AC8D8384FC09FB40 at AM7PR07MB6561.eurprd07.prod.outlook.com>")
FLAGS ())
a12 OK FETCH completed

The first message causes signal 6, the second does not. Probably the
problem is killed by the two consecutive "NIL"s? I'm not an experienced
administrator, only managing my private computer, so I don't know the
meaning of every envelope field. But might these two "NIL"s cause the abort?

BTW, to download all messages from my IMAP account to my private dovecot
instance I had to delete the first message, since I couldn't download
any other messages from the IMAP folder otherwise.

Kind regards

Peter