Add distro banner
Hi,
Ubuntu has been carrying this patch since 2013 to add the distribution name to the SMTP banner. It works with Debian as well, and adds the word "Debian" to the banner like this:
-220 sid-exim4 ESMTP Exim 4.91 Tue, 03 Jul 2018 13:33:55 +0000
+220 sid-exim4 ESMTP Exim 4.91 Debian Tue, 03 Jul 2018 13:33:55 +0000
It relies on lsb_release to detect the distribution's name.
Here is the dep8 test output with that patch applied showing that the tests still pass: http://people.ubuntu.com/~ahasenack/dep8-exim4-distro-banner/
This patch is the only delta Ubuntu has with Debian at the moment in the exim4 package. It would be great if we could eliminate that.
I wasn't sure if I should add a d/changelog entry, but since I had to have one for my local testing, I just left it in there.
Thanks for the consideration, and please let me know your concerns.