-tls_certificate = ${if eq {SERVER}{server}{DIR/aux-fixed/cert1}fail}
-tls_privatekey = ${if eq {SERVER}{server}{DIR/aux-fixed/cert1}fail}
+.ifdef _OPT_MAIN_TLS_CERTIFICATE
+tls_certificate = DIR/aux-fixed/cert1
+.endif
headers_add = "X-body-linecount: $body_linecount\n\
X-message-linecount: $message_linecount\n\
X-received-count: $received_count"
headers_add = "X-body-linecount: $body_linecount\n\
X-message-linecount: $message_linecount\n\
X-received-count: $received_count"