[Exim] Note to anyopne running RedHat 8.0

If you are running RedHat 8.0 and apply the latest glibc updates
(2.3.2-4.80) you might get the following error. Restarting the Exim
daemon fixes the problem.

OpenSSH was affected by the same problem as well. RedHat 7.3 doesn't
seem to have the problem, at least not with OpenSSH.





telnet student.ednet.ns.ca 25

Trying 142.227.51.33...

Connected to Student.EDnet.NS.CA (142.227.51.33).
Escape character is '^]'.
/usr/local/exim/bin/exim: relocation error: /lib/libnss_dns.so.2: symbol
__libc_res_nquery, version GLIBC_PRIVATE not defined in file
libresolv.so.2 with link time reference
Connection closed by foreign host.