X-Git-Url: https://git.exim.org/users/heiko/exim.git/blobdiff_plain/1f4a55daf88541563ceaa66959acb9127604b15a..525239c16e35d7bf893e0e2232f4c4c4a7c75447:/doc/doc-txt/NewStuff?ds=inline

diff --git a/doc/doc-txt/NewStuff b/doc/doc-txt/NewStuff
index 093feee72..3c5c4913b 100644
--- a/doc/doc-txt/NewStuff
+++ b/doc/doc-txt/NewStuff
@@ -39,6 +39,58 @@ Version 4.81
 
     Current status: work-in-progress; $sender_host_dnssec variable added.
 
+ 5. DSCP support for outbound connections: on a transport using the smtp driver,
+    set "dscp = ef", for instance, to cause the connections to have the relevant
+    DSCP (IPv4 TOS or IPv6 TCLASS) value in the header.
+
+    Similarly for inbound connections, there is a new control modifier, dscp,
+    so "warn control = dscp/ef" in the connect ACL, or after authentication.
+
+    Supported values depend upon system libraries.  "exim -bI:dscp" to list the
+    ones Exim knows of.  You can also set a raw number 0..0x3F.
+
+ 6. The -G command-line flag is no longer ignored; it is now equivalent to an
+    ACL setting "control = suppress_local_fixups".  The -L command-line flag
+    is now accepted and forces use of syslog, with the provided tag as the
+    process name.  A few other flags used by Sendmail are now accepted and
+    ignored.
+
+ 7. New cutthrough routing feature.  Requested by a "control = cutthrough_delivery"
+    ACL modifier; works for single-recipient mails which are recieved on and
+    deliverable via SMTP.  Using the connection made for a recipient verify,
+    if requested before the verify, or a new one made for the purpose while
+    the inbound connection is still active.  The bulk of the mail item is copied
+    direct from the inbound socket to the outbound (as well as the spool file).
+    When the source notifies the end of data, the data acceptance by the destination
+    is negociated before the acceptance is sent to the source.  If the destination
+    does not accept the mail item, for example due to content-scanning, the item
+    is not accepted from the source and therefore there is no need to generate
+    a bounce mail.  This is of benefit when providing a secondary-MX service.
+    The downside is that delays are under the control of the ultimate destination
+    system not your own.
+
+    The Recieved-by: header on items delivered by cutthrough is generated
+    early in reception rather than at the end; this will affect any timestamp
+    included.  The log line showing delivery is recorded before that showing
+    reception; it uses a new ">>" tag instead of "=>".
+    
+    To support the feature, verify-callout connections can now use ESMTP and TLS.
+    The usual smtp transport options are honoured, plus a (new, default everything)
+    hosts_verify_avoid_tls.
+
+    New variable families named tls_in_cipher, tls_out_cipher etc. are introduced
+    for specific access to the information for each connection.  The old names
+    are present for now but deprecated.
+
+    Not yet supported: IGNOREQUOTA, SIZE, PIPELINING, AUTH.
+
+ 8. New expansion operators ${listnamed:name} to get the content of a named list
+    and ${listcount:string} to count the items in a list.
+
+ 9. New expansion item ${acl {name}{arg}...} to call an ACL.  The argument can
+    be accessed by the ACL in $acl_arg1 to $acl_arg9.  $acl_narg will be the
+    number of arguments. The expansion result is set by a "message =" modifier
+    and an "accept" return from the ACL.
 
 Version 4.80
 ------------