MHS use of the X.500 Directory to support MHS Routing
RFC 1801
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RFC - Experimental
(June 1995; No errata)
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Network Working Group S. Kille
Request for Comments: 1801 ISODE Consortium
Category: Experimental June 1995
X.400-MHS use of the X.500 Directory to support X.400-MHS Routing
Status of this Memo
This memo defines an Experimental Protocol for the Internet
community. This memo does not specify an Internet standard of any
kind. Discussion and suggestions for improvement are requested.
Distribution of this memo is unlimited.
Table of Contents
1 Introduction 3
2 Goals 3
3 Approach 5
4 Direct vs Indirect Connection 6
5 X.400 and RFC 822 8
6 Objects 9
7 Communities 10
8 Routing Trees 11
8.1 Routing Tree Definition . . . . . . . 12
8.2 The Open Community Routing Tree . . . . . 12
8.3 Routing Tree Location . . . . . . . 13
8.4 Example Routing Trees . . . . . . . 13
8.5 Use of Routing Trees to look up Information . . 13
9 Routing Tree Selection 14
9.1 Routing Tree Order . . . . . . . . 14
9.2 Example use of Routing Trees . . . . . . 15
9.2.1 Fully Open Organisation . . . . . 15
9.2.2 Open Organisation with Fallback . . . 15
9.2.3 Minimal-routing MTA . . . . . . 16
9.2.4 Organisation with Firewall . . . . . 16
9.2.5 Well Known Entry Points . . . . . 16
9.2.6 ADMD using the Open Community for Advertising 16
9.2.7 ADMD/PRMD gateway . . . . . . . 17
10 Routing Information 17
10.1 Multiple routing trees . . . . . . . 20
10.2 MTA Choice . . . . . . . . . . 22
10.3 Routing Filters . . . . . . . . . 25
10.4 Indirect Connectivity . . . . . . . 26
11 Local Addresses (UAs) 27
11.1 Searching for Local Users . . . . . . 30
12 Direct Lookup 30
13 Alternate Routes 30
Kille Experimental [Page 1]
RFC 1801 X.400-MHS Routing using X.500 Directory June 1995
13.1 Finding Alternate Routes . . . . . . . 30
13.2 Sharing routing information . . . . . . 31
14 Looking up Information in the Directory 31
15 Naming MTAs 33
15.1 Naming 1984 MTAs . . . . . . . . . 35
16 Attributes Associated with the MTA 35
17 Bilateral Agreements 36
18 MTA Selection 38
18.1 Dealing with protocol mismatches . . . . . 38
18.2 Supported Protocols . . . . . . . . 39
18.3 MTA Capability Restrictions . . . . . . 39
18.4 Subtree Capability Restrictions . . . . . 40
19 MTA Pulling Messages 41
20 Security and Policy 42
20.1 Finding the Name of the Calling MTA . . . . 42
20.2 Authentication . . . . . . . . . 42
20.3 Authentication Information . . . . . . 44
21 Policy and Authorisation 46
21.1 Simple MTA Policy . . . . . . . . 46
21.2 Complex MTA Policy . . . . . . . . 47
22 Delivery 49
22.1 Redirects . . . . . . . . . . 49
22.2 Underspecified O/R Addresses . . . . . . 50
22.3 Non Delivery . . . . . . . . . . 51
22.4 Bad Addresses . . . . . . . . . 51
23 Submission 53
23.1 Normal Derivation . . . . . . . . 53
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