-keep_environment = PATH
+keep_environment = PATH:SSLKEYLOGFILE
exim_path = EXIM_PATH
host_lookup_order = bydns
spool_directory = DIR/spool
gecos_name = CALLER_NAME
dns_cname_loops = 9
chunking_advertise_hosts =
+
+.ifdef _HAVE_REQTLS
+tls_advertise_requiretls =
+.endif
+.ifdef _HAVE_PIPE_CONNECT
+pipelining_connect_advertise_hosts = :
+.endif
+.ifdef _HAVE_DMARC
+dmarc_tld_file =
+.endif