Richard G
Verified User
Please do not quote complete posts. 
That having said....

Since in other answers one can read that the issue is probably something caused by hardware/OS/memory combination and also lots of people do not have an issue with Exim 4.94, it could very well be a timing issue.
Maybe it has to do with resolving, or maybe Exim is starting faster then Bind causing an issue. Might be a possibility.
But if you can leave configs default and also /etc/domains like it should be with the hostname in it, and the delay in starting exim takes care of the issue, then it's sure worth for others experiencing this issue, to test this too.

That having said....
Very nice find!!At reboot it hang again, then I thought about putting a 30 second delay in starting Exim, and somehow that seems to work?!

Since in other answers one can read that the issue is probably something caused by hardware/OS/memory combination and also lots of people do not have an issue with Exim 4.94, it could very well be a timing issue.
Maybe it has to do with resolving, or maybe Exim is starting faster then Bind causing an issue. Might be a possibility.
But if you can leave configs default and also /etc/domains like it should be with the hostname in it, and the delay in starting exim takes care of the issue, then it's sure worth for others experiencing this issue, to test this too.