X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/21b172df101c2c52faf0cc56a502395451975be9..f2259efecaf2978bc2baf9b7d9c012e3d01daea0:/doc/doc-docbook/spec.xfpt

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index ffb34e882..6ff06f3a4 100644
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -972,7 +972,7 @@ User filters are run as part of the routing process, described below.
 .cindex "Darwin"
 .cindex "Cygwin"
 .cindex "exim_msgdate"
-Every message handled by Exim is given a &'message id'& which is sixteen
+Every message handled by Exim is given a &'message id'& which is 23
 characters long. It is divided into three parts, separated by hyphens, for
 example &`16VDhn-000000001bo-D342`&. Each part is a sequence of letters and digits,
 normally encoding numbers in base 62. However, in the Darwin operating
@@ -7349,6 +7349,11 @@ dot-separated components; a key such as &`*fict.example`&
 in a database file is useless, because the asterisk in a partial matching
 subject key is always followed by a dot.
 
+When the lookup is done from a string-expansion,
+the variables &$1$& and &$2$& contain the wild and non-wild parts of the key
+during the expansion of the replacement text.
+They return to their previous values at the end of the lookup item.
+
 
 
 
@@ -19176,12 +19181,25 @@ This applies to all of the SRV, MX, AAAA, A lookup sequence.
 .cindex "router" "restricting to specific domains"
 .vindex "&$domain_data$&"
 If this option is set, the router is skipped unless the current domain matches
-the list. If the match is achieved by means of a file lookup, the data that the
-lookup returned for the domain is placed in &$domain_data$& for use in string
+the list.
+The data returned by the list check
+is placed in &$domain_data$& for use in string
 expansions of the driver's private options and in the transport.
 See section &<<SECTrouprecon>>& for
 a list of the order in which preconditions are evaluated.
 
+A complex example, using a file like:
+.code
+alice@dom1
+bill@dom1
+maggie@dom1
+.endd
+and checking both domain and local_part
+.code
+domains =         ${domain:${lookup {$local_part@$domain} lseach,ret=key {/path/to/accountsfile}}}
+local_parts = ${local_part:${lookup {$local_part@$domain} lseach,ret=key {/path/to/accountsfile}}}
+.endd
+
 
 
 .option driver routers string unset
@@ -19545,7 +19563,7 @@ example:
 local_parts = dbm;/usr/local/specials/$domain_data
 .endd
 .vindex "&$local_part_data$&"
-If the match is achieved by a lookup, the data that the lookup returned
+the data returned by the list check
 for the local part is placed in the variable &$local_part_data$& for use in
 expansions of the router's private options or in the transport.
 You might use this option, for
@@ -29675,10 +29693,10 @@ A HUP signal is sufficient for this.
 The value &"system"& results in no caching under GnuTLS.
 
 The macro _HAVE_TLS_CA_CACHE will be defined if the suffix for "system"
-is acceptable in configurations for the Exim executavble.
+is acceptable in configurations for the Exim executable.
 
 Caching of the system Certificate Authorities bundle can
-save siginificant time and processing on every TLS connection
+save significant time and processing on every TLS connection
 accepted by Exim.
 
 
@@ -29848,10 +29866,10 @@ A HUP signal is sufficient for this.
 The value &"system"& results in no caching under GnuTLS.
 
 The macro _HAVE_TLS_CA_CACHE will be defined if the suffix for "system"
-is acceptable in configurations for the Exim executavble.
+is acceptable in configurations for the Exim executable.
 
 Caching of the system Certificate Authorities bundle can
-save siginificant time and processing on every TLS connection
+save significant time and processing on every TLS connection
 initiated by Exim.