&*Note*&: Under current versions of OpenSSL, when a list of more than one
file is used, the &$tls_in_ourcert$& veriable is unreliable.
+
+&*Note*&: OCSP stapling is not usable when a list of more than one file is used.
.wen
If the option contains &$tls_out_sni$& and Exim is built against OpenSSL, then
Usable for GnuTLS 3.4.4 or 3.3.17 or OpenSSL 1.1.0 (or later).
+.new
+For GnuTLS 3.5.6 or later the expanded value of this option can be a list
+of files, to match a list given for the &%tls_certificate%& option.
+The ordering of the two lists must match.
+.wen
+
.option tls_on_connect_ports main "string list" unset
.cindex SSMTP