BATV PRVS no longer uses slashes.

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

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index a82a5c4894cfa88d5814db3cddb10523b7c325c6..874c3f0e9351bfd352b4e2576b95cbecaadaad4b 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -1,4 +1,4 @@
-. $Cambridge: exim/doc/doc-docbook/spec.xfpt,v 1.38 2008/02/26 11:46:33 fanf2 Exp $
+. $Cambridge: exim/doc/doc-docbook/spec.xfpt,v 1.43 2008/05/14 09:16:38 fanf2 Exp $

 .
 . /////////////////////////////////////////////////////////////////////////////
 . This is the primary source of the Exim Manual. It is an xfpt document that is
 .
 . /////////////////////////////////////////////////////////////////////////////
 . This is the primary source of the Exim Manual. It is an xfpt document that is


@@ -18958,11 +18958,9 @@ filter itself, and the original process that reads the result and delivers it
 are all run in parallel, like a shell pipeline.
 
 The filter can perform any transformations it likes, but of course should take
 are all run in parallel, like a shell pipeline.
 
 The filter can perform any transformations it likes, but of course should take

-care not to break RFC 2822 syntax. A demonstration Perl script is provided in
-&_util/transport-filter.pl_&; this makes a few arbitrary modifications just to
-show the possibilities. Exim does not check the result, except to test for a
-final newline when SMTP is in use. All messages transmitted over SMTP must end
-with a newline, so Exim supplies one if it is missing.
+care not to break RFC 2822 syntax. Exim does not check the result, except to
+test for a final newline when SMTP is in use. All messages transmitted over
+SMTP must end with a newline, so Exim supplies one if it is missing.

 
 .cindex "content scanning" "per user"
 A transport filter can be used to provide content-scanning on a per-user basis
 
 .cindex "content scanning" "per user"
 A transport filter can be used to provide content-scanning on a per-user basis


@@ -24057,11 +24055,11 @@ sections &<<SECTreqciphssl>>& and &<<SECTreqciphgnu>>&.
 
 
 .section "GnuTLS parameter computation" "SECID181"
 
 
 .section "GnuTLS parameter computation" "SECID181"

-GnuTLS uses RSA and D-H parameters that may take a substantial amount of time
+GnuTLS uses D-H parameters that may take a substantial amount of time

 to compute. It is unreasonable to re-compute them for every TLS session.
 Therefore, Exim keeps this data in a file in its spool directory, called
 &_gnutls-params_&. The file is owned by the Exim user and is readable only by
 to compute. It is unreasonable to re-compute them for every TLS session.
 Therefore, Exim keeps this data in a file in its spool directory, called
 &_gnutls-params_&. The file is owned by the Exim user and is readable only by

-its owner. Every Exim process that start up GnuTLS reads the RSA and D-H
+its owner. Every Exim process that start up GnuTLS reads the D-H

 parameters from this file. If the file does not exist, the first Exim process
 that needs it computes the data and writes it to a temporary file which is
 renamed once it is complete. It does not matter if several Exim processes do
 parameters from this file. If the file does not exist, the first Exim process
 that needs it computes the data and writes it to a temporary file which is
 renamed once it is complete. It does not matter if several Exim processes do


@@ -26317,7 +26315,9 @@ verified as a sender.
 .cindex "&ACL;" "testing a DNS list"
 In its simplest form, the &%dnslists%& condition tests whether the calling host
 is on at least one of a number of DNS lists by looking up the inverted IP
 .cindex "&ACL;" "testing a DNS list"
 In its simplest form, the &%dnslists%& condition tests whether the calling host
 is on at least one of a number of DNS lists by looking up the inverted IP

-address in one or more DNS domains. For example, if the calling host's IP
+address in one or more DNS domains. (Note that DNS list domains are not mail
+domains, so the &`+`& syntax for named lists doesn't work - it is used for
+special options instead.) For example, if the calling host's IP

 address is 192.168.62.43, and the ACL statement is
 .code
 deny dnslists = blackholes.mail-abuse.org : \
 address is 192.168.62.43, and the ACL statement is
 .code
 deny dnslists = blackholes.mail-abuse.org : \


@@ -27552,19 +27552,8 @@ the third string (in this case &"1"&), whether or not the cryptographic and
 timeout checks succeed. The &$prvscheck_result$& variable contains the result
 of the checks (empty for failure, &"1"& for success).
 
 timeout checks succeed. The &$prvscheck_result$& variable contains the result
 of the checks (empty for failure, &"1"& for success).
 

-There are two more issues you must consider when implementing prvs-signing.
-Firstly, you need to ensure that prvs-signed addresses are not blocked by your
-ACLs. A prvs-signed address contains a slash character, but the default Exim
-configuration contains this statement in the RCPT ACL:
-.code
-deny    message       = Restricted characters in address
-        domains       = +local_domains
-        local_parts   = ^[.] : ^.*[@%!/|]
-.endd
-This is a conservative rule that blocks local parts that contain slashes. You
-should remove the slash in the last line.
-
-Secondly, you have to ensure that the routers accept prvs-signed addresses and
+There is one more issue you must consider when implementing prvs-signing:
+you have to ensure that the routers accept prvs-signed addresses and

 deliver them correctly. The easiest way to handle this is to use a &(redirect)&
 router to remove the signature with a configuration along these lines:
 .code
 deliver them correctly. The easiest way to handle this is to use a &(redirect)&
 router to remove the signature with a configuration along these lines:
 .code