https://bugs.exim.org/show_bug.cgi?id=2277
Bug ID: 2277
Summary: DNS error causes router to fail
Product: Exim
Version: N/A
Hardware: x86
OS: Linux
Status: NEW
Severity: bug
Priority: medium
Component: Routing
Assignee: nigel@???
Reporter: marc@???
CC: exim-dev@???
I am using a manual router that looks up the route_list in a dbm file.
One of the entries in this file contains:
example.com : mail1.example.com : mail2.example.com
In this rare example, mail1.example.com resolves fine, but no IP address is
returned for mail2.example.com due to customer screwing up their dns.
The problem is that the bad dns on mail2.example.com causes the router to fail
even though it could have been delivered just fine to mail1.example.com.
I think that a bad dns lookup on mail2.example.com should not cause a failure
if mail1.example.com is deliverable.
I know this is a very rare condition, but I thought I would report it anyway.
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