X-Git-Url: https://git.exim.org/users/heiko/exim.git/blobdiff_plain/6ece2e778f8e9af2047b7bb11c6fbe48ef368762..167c587a5691aaf8fa04fbfad083fcdbe2277de6:/doc/doc-docbook/spec.xfpt

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 8d103fa83..4b9f53ed1 100644
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -371,11 +371,13 @@ contributors.
 .section "Exim documentation" "SECID1"
 . Keep this example change bar when updating the documentation!
 
+.new
 .cindex "documentation"
 This edition of the Exim specification applies to version &version() of Exim.
 Substantive changes from the &previousversion; edition are marked in some
 renditions of the document; this paragraph is so marked if the rendition is
 capable of showing a change indicator.
+.wen
 
 This document is very much a reference manual; it is not a tutorial. The reader
 is expected to have some familiarity with the SMTP mail transfer protocol and
@@ -26055,6 +26057,12 @@ validation to succeed, of course, but if it's not preinstalled, sending the
 root certificate along with the rest makes it available for the user to
 install if the receiving end is a client MUA that can interact with a user.
 
+Note that certificates using MD5 are unlikely to work on today's Internet;
+even if your libraries allow loading them for use in Exim when acting as a
+server, increasingly clients will not accept such certificates.  The error
+diagnostics in such a case can be frustratingly vague.
+
+
 
 .section "Self-signed certificates" "SECID187"
 .cindex "certificate" "self-signed"