X-Git-Url: https://git.exim.org/users/jgh/exim.git/blobdiff_plain/6ea85e9a4ac76f292db7bb946d6ada8d3ac93a2d..411ef850bbc5eba056d314edef8124105d480a4a:/doc/doc-txt/NewStuff

diff --git a/doc/doc-txt/NewStuff b/doc/doc-txt/NewStuff
index ae4043cc1..4ee55fdcf 100644
--- a/doc/doc-txt/NewStuff
+++ b/doc/doc-txt/NewStuff
@@ -1,4 +1,4 @@
-$Cambridge: exim/doc/doc-txt/NewStuff,v 1.111 2006/09/25 10:14:20 ph10 Exp $
+$Cambridge: exim/doc/doc-txt/NewStuff,v 1.115 2006/10/03 15:11:22 ph10 Exp $
 
 New Features in Exim
 --------------------
@@ -50,6 +50,74 @@ Version 4.64
    The modifier can be used in SMTP and non-SMTP ACLs. It applies to both
    permanent and temporary rejections.
 
+3. There is a new authenticator called "dovecot". This is an interface to the
+   authentication facility of the Dovecot POP/IMAP server, which can support a
+   number of authentication methods. If you are using Dovecot to authenticate
+   POP/IMAP clients, it might be helpful to use the same mechanisms for SMTP
+   authentication. This is a server authenticator only. The only option is
+   server_socket, which must specify the socket which is the interface to
+   Dovecot authentication. The public_name option must specify an
+   authentication mechanism that Dovecot is configured to support. You can have
+   several authenticators for different mechanisms. For example:
+
+     dovecot_plain:
+       driver = dovecot
+       public_name = PLAIN
+       server_name = /var/run/dovecot/auth-client
+       server_setid = $auth1
+
+     dovecot_ntlm:
+       driver = dovecot
+       public_name = NTLM
+       server_name = /var/run/dovecot/auth-client
+       server_setid = $auth1
+
+4. The variable $message_headers_raw provides a concatenation of all the
+   messages's headers without any decoding. This is in contrast to
+   $message_headers, which does RFC2047 decoding on the header contents.
+
+5. In a DNS black list, when the facility for restricting the matching IP
+   values is used, the text from the TXT record that is set in $dnslist_text
+   may not reflect the true reason for rejection. This happens when lists are
+   merged and the IP address in the A record is used to distinguish them;
+   unfortunately there is only one TXT record. One way round this is not to use
+   merged lists, but that can be inefficient because it requires multiple DNS
+   lookups where one would do in the vast majority of cases when the host of
+   interest is not on any of the lists.
+
+   A less inefficient way of solving this problem has now been implemented. If
+   two domain names, comma-separated, are given, the second is used first to do
+   an initial check, making use of any IP value restrictions that are set. If
+   there is a match, the first domain is used, without any IP value
+   restrictions, to get the TXT record. As a byproduct of this, there is also a
+   check that the IP being tested is indeed on the first list. The first domain
+   is the one that is put in $dnslist_domain. For example:
+
+     reject message  = rejected because $sender_ip_address is blacklisted \
+                       at $dnslist_domain\n$dnslist_text
+            dnslists = sbl.spamhaus.org,sbl-xbl.spamhaus.org=127.0.0.2 : \
+                       dul.dnsbl.sorbs.net,dnsbl.sorbs.net=127.0.0.10
+
+   For the first blacklist item, this starts by doing a lookup in
+   sbl-xbl.spamhaus.org and testing for a 127.0.0.2 return. If there is a
+   match, it then looks in sbl.spamhaus.org, without checking the return value,
+   and as long as something is found, it looks for the corresponding TXT
+   record. If there is no match in sbl-xbl.spamhaus.org, nothing more is done.
+   The second blacklist item is processed similarly.
+
+   If you are interested in more than one merged list, the same list must be
+   given several times, but because the results of the DNS lookups are cached,
+   the DNS calls themselves are not repeated. For example:
+
+     reject dnslists = http.dnsbl.sorbs.net,dnsbl.sorbs.net=127.0.0.2 : \
+                      socks.dnsbl.sorbs.net,dnsbl.sorbs.net=127.0.0.3 : \
+                       misc.dnsbl.sorbs.net,dnsbl.sorbs.net=127.0.0.4 : \
+                        dul.dnsbl.sorbs.net,dnsbl.sorbs.net=127.0.0.10
+
+   In this case there is a lookup in dnsbl.sorbs.net, and if none of the IP
+   values matches (or if no record is found), this is the only lookup that is
+   done. Only if there is a match is one of the more specific lists consulted.
+
 
 Version 4.63
 ------------