Expansions: check numeric values of IPv4 address components

[exim.git] / doc / doc-docbook / spec.xfpt

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index be93cf67075ebd93f4493b621ecd1c49f2a216a2..128ee8004002062b88476fe64b63b6a5e715c2a1 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -11042,9 +11042,14 @@ colon-separated components are permitted, each containing from one to four
 hexadecimal digits. There may be fewer than eight components if an empty
 component (adjacent colons) is present. Only one empty component is permitted.
 
-&*Note*&: The checks are just on the form of the address; actual numerical
-values are not considered. Thus, for example, 999.999.999.999 passes the IPv4
-check. The main use of these tests is to distinguish between IP addresses and
+.new
+&*Note*&: The checks used to be just on the form of the address; actual numerical
+values were not considered. Thus, for example, 999.999.999.999 passed the IPv4
+check.
+This is no longer the case.
+.wen
+
+The main use of these tests is to distinguish between IP addresses and
 host names, or between IPv4 and IPv6 addresses. For example, you could use
 .code
 ${if isip4{$sender_host_address}...
@@ -35769,9 +35774,10 @@ down a single SMTP connection, an asterisk follows the IP address in the log
 lines for the second and subsequent messages.
 .new
 When two or more messages are delivered down a single TLS connection, the
-TLS-related information logged for the first message delivered
-(which may not be the earliest line in the log)
+DNS and TLS-related information logged for the first message delivered
 will not be present in the log lines for the second and subsequent messages.
+A TLS-marker indication of &'X=*'& is added to the log line instead of
+cipher information.
 .wen
 
 .cindex "delivery" "cutthrough; logging"
@@ -35900,7 +35906,7 @@ the following table:
 &`T   `&        on &`<=`& lines: message subject (topic)
 &`    `&        on &`=>`& &`**`& and &`==`& lines: transport name
 &`U   `&        local user or RFC 1413 identity
-&`X   `&        TLS cipher suite
+&`X   `&        TLS cipher suite, or TLS usage mark
 .endd