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- Network Working Group E. Huizer
- Request for Comments: 1844 SURFnet bv
- Obsoletes: 1820 August 1995
- Category: Informational
-
-
- Multimedia E-mail (MIME) User Agent checklist
-
- Status of this Memo
-
- This memo provides information for the Internet community. This memo
- does not specify an Internet standard of any kind. Distribution of
- this memo is unlimited.
-
- Abstract
-
- This document presents a checklist to facilitate evaluation of MIME
- capable User Agents. Access to a MIME test-responder, that generates
- test-messages is described.
-
- Introduction
-
- This document presents a checklist that facilitates evaluation of
- MIME capable E-mail User Agents. It is by no means a conformance or
- interoperability (both strictly defined and measurable quantities)
- checklist, but rather an interworking (practical perspective)
- checklist that is aimed at the users and system managers.
-
- Usage and submission
-
- If you use this checklist against a specific product (regardless of
- whether you're a vendor, implementor or user) you can submit the
- result to mime-check@nic.surfnet.nl, make sure that the subject
- reflects the name and version of the product. This is an automated
- mailhandler, so PLEASE only submit filled-in checklists (in content-
- type text/plain or text/html) to this address. This information will
- be made available (at no cost) for other people to browse through at
- URL: http://www.nic.surfnet.nl/surfnet/projects/surf-ace/mime/
-
- Although SURFnet will attempt to verify the correctness of each
- submission, all submitted information is made available as is, with
- no guarantees (SURFnet does not take any responsibility for errors in
- the data that is made available, or for any damages resulting from
- usage of that data). Users who want to procure a UA are advised to
- use the data as an orientation, and to perform their own procurement
- tests (possibly using the checklist below as a guideline). Also it is
- noted that vendors and implementors are encouraged to use the results
- from the checklist to improve their products.
-
-
-
- Huizer Informational [Page 1]
-
- RFC 1844 MIME User Agent Checklist August 1995
-
-
- Getting test messages
-
- For several tests in the checklist a test message is required. Test
- messages can be requested in the following way: Send mail to <mime-
- test@relay.surfnet.nl> with a subject field containing ONE of the
- following:
-
- text/plain
- text/enriched
- image/gif
- image/jpeg
- audio/basic
- video/mpeg
- application/octet-stream
- application/postscript
- message/rfc822
- message/partial
- message/external
- multipart/mixed
- multipart/parallel
- multipart/digest
- multipart/alternative
- multipart/appledouble
- application/wordperfect5.1
- application/msword
- application/rtf
- X-local <to test how your UA deals with undefined content-types>
- nested <returns a message that contains nested multipart contents>
- iso-8859-1 <returns a message with text/plain; charset=iso-8859-1>
-
- A message containing the requested content-type will be returned to
- the address contained in the from field.
-
- References
-
- The reader is encouraged to also check out the following references:
-
- The MIME standards:
-
- - Borenstein N. and N. Freed, "MIME (Multipurpose Internet
- Mail Extensions) Part One: Mechanisms for specifying and
- describing the format of Internet message bodies", RFC 1521,
- Bellcore, Innosoft, September 1993.
-
- - Moore K., "MIME (Multipurpose Internet Mail Extensions) Part
- Two: Message header extensions for non-Ascii text", RFC 1522,
- University of Tennessee, September 1993.
-
-
-
-
- Huizer Informational [Page 2]
-
- RFC 1844 MIME User Agent Checklist August 1995
-
-
- The registration procedure for content types:
-
- - Postel J., "Media type registration procedure", RFC 1590,
- USC/Information Sciences Institute, March 1994.
-
- Some related informational documents:
-
- - Borenstein N., "The text/enriched MIME content-type",
- RFC 1563, Bellcore, October 1994.
-
- - Borenstein N., "A user agent configuration mechanism for
- multimedia mail format information", RFC 1524, Bellcore,
- September 1993.
-
- Registered MIME content-types can be found at the following URL:
- ftp://ftp.isi.edu/in-notes/iana/assignments/media-types/media-types
-
- The SUNet MIME project: http://www.nada.kth.se/sunet-mime/ This
- offers evaluation tests reports of MIME products, as well as tests
- and test-criteria for MIME implementors.
-
- From Stockholm University a list of user-interface requirments for a
- mail/news reader is available under: gopher://mars.dsv.su.se/11/dsv-
- reports/research-reports/messaging-research
-
- Checklist for Mime UAs
-
- (note that for items with multiple choice options, it is possible
- that more than one option is applicable)
-
- 1. General information:
- 1.1 The name and version of the product
- 1.2 The name and addressing information of the manufacturer
- 1.3 What are the platforms that are supported (Operating system,
- GUI and hardware requirements, if applicable: what APIs are
- supported (like MAPI etc.))? [Note: Please use separate
- checklist forms for different platforms!!]
- 1.4 What is the platform that was used for this checklist
- (Operating system, GUI and hardware)? [Note: Only one
- platform per checklist!!]
- 1.5 Is the software available in source format or in binary
- format or both.
- 1.6 Pricing information. Is the software available:
- - In the Public Domain, free of charge
- - As shareware (what is the price?)
- - PD for non-profit use, but not for commercial use
- - Commercially
-
-
-
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- Huizer Informational [Page 3]
-
- RFC 1844 MIME User Agent Checklist August 1995
-
-
- 2. System installation, configuration and management
- 2.1 How complex/easy is installation and configuration? Are
- there any pitfalls that need attention? Can you configure
- per set of users (i.e systemwide or LAN wide default
- configuration) and/or per user?
- 2.2 Are there facilities for logging and/or accounting?
- 2.3 Does the UA generate correct RFC-822 headers for outgoing
- messages:
- From:, (and if necessary) Sender:
- Date:
- Message-id:
- 2.4 Is it possible for a non-priviledged user to change the
- "from" and/or "sender" field?
- 2.5 Does the UA have any size restrictions (default or applied
- by system manager) for:
- - Message size
- - Number of messages
- - Number of folders
- - Number of messages per folder
- 2.6 How secure is the users mailbox when using this UA? Can
- other non-privileged usets access the mailbox?
- 2.7 What is the performance of the UA on this platform? (As this
- is difficult to measure, give your subjective impression:
- slow, reasonable or fast) E.g for:
- - Displaying a text message
- - Displaying a MIME message that contains an image
- - Complex actions like sorting etc.
-
- 3. General UA properties
- 3.1 Does the UA have a graphical or a character based interface
- or both?
- 3.2 Does the UA support native RFC-822/MIME or does it require a
- gateway?
- 3.3 Which protocols are supported for message delivery:
- a. SMTP (MX records or static routing to Mailhost)
- b. ESMTP
- c. POP (which version)
- d. IMAP
- e. Co-location with specific MTA (which MTA)
- f. Other ...............
- 3.4 Which protocols are supported for message submission:
- a. SMTP
- b. ESMTP
- c. Co-location with specific MTA (which MTA)
- d. Other ...............
- 3.5 Does the UA support the following basic functionalities:
- - List messages
- - Read messages
-
-
-
- Huizer Informational [Page 4]
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- RFC 1844 MIME User Agent Checklist August 1995
-
-
- - Delete messages
- - Compose new messages
- - Reply to messages (Inclusion of original message-text in
- reply, reply to originator or to any or all recipients
- etc.)
- - Forward message
- o using MIME
- o using RFC-934 encapsulation; i.e. message is
- encapsulated in between:
- ------- Forwarded Message and
- ------- End of Forwarded Message
- o Other .......
- - Distribute message (the from field does not change)
- 3.6 Does the UA support the following header fields and can they
- be supplied by the user:
- Generated correctly Can be supplied by user
- - To:
- - Cc:
- - Bcc:
- - From:
- - Reply-to:
- - Subject:
- - Comments:
- 3.7 Does the UA support filing mail into folders? Are there any
- restrictions?
- 3.8 Does the UA support a filtering mechanism that allows the
- user to configure automatic processing of incoming mail
- (e.g. automatic filing into specific folders)? If so, how
- simple is the configuration of these filters?
- 3.9 Does the UA support a sorting mechanism that allows the user
- to sort mail on date and/or subject and/or from field etc?
- If so describe the possibilities and restrictions.
- 3.10 Does the UA support address lists and/or directory services?
- - Local (local address list, local aliases, local distribution
- lists etc.)
- - Whois++
- - Ph (to CCSO server)
- - LDAP or SOLO or other access protocols to a directory
- service
- - Other .....
- 3.11 What other non-multimedia facilities does the UA support?
- 3.12 What secure mail protocols does the UA support (in-line):
- - PEM (Privacy Enhanced Mail)
- - PGP (Pretty Good Privacy)
- - Other.....
-
-
-
-
-
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- Huizer Informational [Page 5]
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- RFC 1844 MIME User Agent Checklist August 1995
-
-
- 4. MIME support
- 4.1 Does the UA support:
- - viewing a MIME content (either in-line or through launching
- an external viewer)?
- - saving a MIME content in a file?
- - saving one part of a multipart message in a file?
- - printing a MIME content?
- 4.2 Does the UA support receipt of the following basic MIME
- content types? Does it display them in-line and does it
- support printing of such a content type? If an external
- viewer is needed, is a viewer pre-configured? Is the viewer
- included in the software distribution?
- In-line Printing External Preconfig Included
- - text/plain
- - text/enriched
- - image/gif
- - image/jpeg
- - audio/basic
- - video/mpeg
- - application/octet-stream
- - application/postscript
- - message/rfc822
- - message/partial
- Does the UA support ftp and/or mail access for:
- - message/external
- Describe how the UA supports the basic multipart types:
- - multipart/mixed
- - multipart/parallel
- - multipart/digest
- - multipart/alternative
- How does the UA handle:
- - X-<bilateraly defined>
- - unknown/unconfigured content-types
- 4.3 Does the UA allow configuration for receipt of additional
- content-types? If so describe the configuration procedure
- and possibilities. (Is it complex/easy, give example
- configuration, can you add external viewers etc.). E.g.
- - application/wordperfect5.1
- - application/msword
- - multipart/appledouble (Macintosh systems only)
- 4.4 Does the UA support composition of the following basic MIME
- content types? Describe how easy/complex composition of a
- message with a MIME content-type is.
- - text/plain
- - text/enriched
- - image/gif
- - image/jpeg
- - audio/basic
-
-
-
- Huizer Informational [Page 6]
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- RFC 1844 MIME User Agent Checklist August 1995
-
-
- - video/mpeg
- - application/octet-stream
- - application/postscript
- - message/rfc822
- - message/partial
- - message/external
- - multipart/mixed
- - multipart/parallel
- - multipart/digest
- - multipart/alternative
- Does the UA generate X-<bilaterally defined> content-types
- (when and why)
- 4.5 Does the UA support compostion of additional content-types?
- If so describe how to do this (configuration and/or
- compostion), e.g.:
- - application/wordperfect5.1
- - application/msword
- - multipart/appledouble (Macintosh systems only)
- 4.6 What content-encodings does the UA support:
- - 7bit
- - quoted printable
- - base64
- - binary
- - 8bit
- - X-<bilateraly defined> (when and why)
- 4.7 What encoding is used for the following content-types:
- 7bit QP B64 Binary 8-bit Other
- - text/plain
- - text/enriched
- - image/gif
- - image/jpeg
- - audio/basic
- - video/mpeg
- - application/octet-stream
- - application/postscript
- - message/rfc822
- - message/partial
- - message/external
- - multipart/mixed
- - multipart/parallel
- - multipart/digest
- - multipart/alternative
- 4.8 Does the UA generate the correct Mime version header:
- Mime-Version: 1.0
- 4.9 In multipart messages, give an example of the sort of
- boundary string generated.
- 4.10 Does the UA support the use of non-ascii characters in the
- headers (in subject, free form part of address etc.)?
-
-
-
- Huizer Informational [Page 7]
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- RFC 1844 MIME User Agent Checklist August 1995
-
-
- 4.11 With the content type text/plain it is possible to have a
- charset parameter, indicating that a specific character set is
- used in the content type text plain. What character sets (like
- iso-8859-1) does the UA support (standard or configurable)?
-
- Security Considerations
-
- Testing a MIME UA against this checklist involves the security risks
- that are described in the MIME specification (RFC 1521). Most notably
- the automatic execution of general-purpose PostScript interpreters
- entails serious security risks. The reader is encouraged to read RFC
- 1521 for more detail on these security risks.
-
- Author's Address
-
- Erik Huizer
- SURFnet bv
- P.O. Box 19035
- 3501 DA Utrecht
- The Netherlands
-
- Phone: +31 30 305305
- Fax: +31 30 305329
- EMail: Erik.Huizer@SURFnet.nl
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