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 like 2147483641" (("Prateek Kohli" NIL "prateek.kohli"
- 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
"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@apache.org" " DB7PR07MB40285E61F0731810A615E3FB92B40@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@apache.org" NIL "markt" "apache.org")("M Venkata Pratap M" NIL "m.m.venkata.pratap" "ericsson.com")) NIL " AM7PR07MB6561761FA78F23F5AAF398399FB70@AM7PR07MB6561.eurprd07.prod.outlook.com" " AM7PR07MB65615CD03F422AC8D8384FC09FB40@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