https://bugs.exim.org/show_bug.cgi?id=2166
Bug ID: 2166
Summary: Segfaults when remote server drop connections before
banner
Product: Exim
Version: 4.89
Hardware: x86
OS: Linux
Status: NEW
Severity: bug
Priority: medium
Component: Transports
Assignee: nigel@???
Reporter: chirila@???
CC: exim-dev@???
It seems the when a SMTP transport tries to deliver a message and the remote
server drops the connection before the banner is returned, the SMTP transport
segfaults and the messages is frozen.
Example case where I managed to replicate the same problem:
====
2017-09-14 01:11:44 1dsTvi-0001q4-Ll == test@???
R=spamexperts T=remote_smtp defer (-1): smtp transport process returned
non-zero status 0x000b: terminated by signal 11
2017-09-14 01:11:44 1dsTvi-0001q4-Ll Frozen
====
On the remote server I have another Exim with simple acl_smtp_connect:
====
acl_connect:
drop
message = Your IP has been blacklisted
====
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