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原帖由 ailms 于 2006-8-7 09:38 发表
这就是 RFC974 中摘出来的
- RFC 2821
- Multiple MX records contain a preference indication that MUST be used
- in sorting (see below). Lower numbers are more preferred than higher
- ones. If there are multiple destinations with the same preference
- and there is no clear reason to favor one (e.g., by recognition of an
- easily-reached address), then the sender-SMTP MUST randomize them to
- spread the load across multiple mail exchangers for a specific
- organization.
复制代码
http://www.rfc-editor.org/cgi-bin/rfcsearch.pl?searchwords=rfc2821&opt=All+fields&num=25&format=ftp&orgkeyword=974&filefmt=txt&search_doc=search_all&match_method=prefix&abstract=absoff&keywords=keyoff&sort_method=newer
Obsoletes RFC821, RFC974, RFC1869, RFC10
Errata
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