Disable SSLv2 by default.

[users/heiko/exim.git] / doc / doc-txt / NewStuff

diff --git a/doc/doc-txt/NewStuff b/doc/doc-txt/NewStuff
index c25e51ba073c6af922ea133f0df589b39290960e..6eae4ce7b0eebc500bb1dee00fa95f98f0cb79f1 100644 (file)
--- a/doc/doc-txt/NewStuff
+++ b/doc/doc-txt/NewStuff
@@ -13,10 +13,7 @@ Version 4.78
     This is a SASL interface, licensed under GPL, which can be found at
     http://www.gnu.org/software/gsasl/.
     This system does not provide sources of data for authentication, so
-    careful use needs to be made of the conditions in Exim.  Note that
-    this can not yet be used as a drop-in replacement for Cyrus SASL, as
-    Exim is currently unable to construct strings with embedded NULs for
-    use as keys in lookups against sasldb2.
+    careful use needs to be made of the conditions in Exim.
 
  2. New authenticator driver, "heimdal_gssapi".  Server-only.
     A replacement for using cyrus_sasl with Heimdal, now that $KRB5_KTNAME
@@ -33,7 +30,35 @@ Version 4.78
 
  5. New lookup type, "dbmjz".  Key is an Exim list, the elements of which will
     be joined together with ASCII NUL characters to construct the key to pass
-    into the DBM library.
+    into the DBM library.  Can be used with gsasl to access sasldb2 files as
+    used by Cyrus SASL.
+
+ 6. OpenSSL now supports TLS1.1 and TLS1.2 with OpenSSL 1.0.1.
+
+    Avoid release 1.0.1a if you can.  Note that the default value of
+    "openssl_options" is no longer "+dont_insert_empty_fragments", as that
+    increased susceptibility to attack.  This may still have interoperability
+    implications for very old clients (see version 4.31 change 37) but
+    administrators can choose to make the trade-off themselves and restore
+    compatibility at the cost of session security.
+
+ 7. Use of the new expansion variable $tls_sni in the main configuration option
+    tls_certificate will cause Exim to re-expand the option, if the client
+    sends the TLS Server Name Indication extension, to permit choosing a
+    different certificate; tls_privatekey will also be re-expanded.  You must
+    still set these options to expand to valid files when $tls_sni is not set.
+
+    The SMTP Transport has gained the option tls_sni, which will set a hostname
+    for outbound TLS sessions, and set $tls_sni too.
+
+    A new log_selector, +tls_sni, has been added, to log received SNI values
+    for Exim as a server.
+
+    Currently OpenSSL only.
+
+ 8. SSLv2 now disabled by default in OpenSSL.  (Never supported by GnuTLS).
+    Use "openssl_options -no_sslv2" to re-enable support, if your OpenSSL
+    install was not built with OPENSSL_NO_SSL2 ("no-ssl2").
 
 
 Version 4.77