The IESG has approved the following document: - 'Sieve Extension: Relational Tests ' <draft-ietf-sieve-3431bis-04.txt> as a Proposed Standard This document is the product of the Sieve Mail Filtering Language Working Group. The IESG contact persons are Scott Hollenbeck and Ted Hardie. A URL of this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-sieve-3431bis-04.txt Technical Summary This document is a revision of RFC 3431. The "relational" Sieve mail filtering language extension adds two relational match types. The COUNT match type allows a script to count a number of entities of a particular type, e.g. number of email addresses in a header field, number of header fields. The VALUE match type gives script writers the ability to perform "greater than" or "less than" comparisons, instead of just equality comparison available in the base Sieve language. Working Group Summary This document started as a minor update to RFC 3431. It updated references, fixed several errors in examples. Some clarifications were made as well, for example clarification on how to count a number of addresses in a RFC 2822 email group. A new technical issue was brought up during WGLC. RFC 3431 required that all leading spaces must be stripped from values before performing a relational test, as spaces between a header field name and its value are not significant. However the Sieve variables extension added a new test for which this rule didn't make sense anymore. A related issue about stripping trailing spaces was also brought up, as preservation of trailing spaces in RFC 2822 header fields can't be guaranteed while the message is in transit. Both issues were discussed at length on the mailing list and the WG reached consensus to remove both leading and trailing spaces when testing or modifying a header field value. The requirement to strip leading/trailing spaces was moved from the relational document to the base Sieve document. Protocol Quality Working group reviewers include Ned Freed, Philip Guenther, Michael Haardt, and Mark E. Mallett. Scott Hollenbeck has reviewed the specification for the IESG. Implementations include CMU Sieve and Sun. _______________________________________________ IETF-Announce@ietf.org https://www1.ietf.org/mailman/listinfo/ietf-announce
