[root@server ~]# exim -bV | grep '^Support for:'
2019-07-25 17:16:10 Exim configuration error in line 1 of /etc/exim.srs.conf:
main option "srs_config" unknown
Support for: crypteq IPv6 Perl OpenSSL move_frozen_messages Content_Scanning Old _Demime DKIM DNSSEC Event OCSP PRDR