Electronic mail delivery method and mail system

Abstract

The invention discloses an electronic mail delivery method which comprises the following steps: before a mail is sent, a mail system of a sending part judges whether a mail system of a receiving part supports a mail address in the RFC6532 format, the mail system of the sending part supports the mail address in the RFC6532 format, the mail includes the mail address in the RFC6532 format; if the judgment is positive, the mail is sent to the mail system of the receiving part; if the judgment is negative, the mail is revised, and the revised mail is sent to the mail system of the receiving part. The invention further discloses a mail system. By adopting the invention, a user can learn whether a site supports an international mail address protocol by domain name server (DNS) search only through expanding a recording item of a domain name, and effectively and quickly judge whether the mail system of the receiving part supports the international mail address protocol, so that a quick and exact judgment basis is provided for the mail system to solve the problem of compatibility of new and old protocol mails.

Description

technical field [0001] The invention relates to the communication field, in particular to an e-mail delivery method and a mail system. Background technique [0002] The Internationalized Mail Address Protocol RFC 6532 describes a new way to describe email addresses containing non-ASCII characters. At present, the vast majority of mail systems support the RFC 2047 protocol, which can describe mail addresses containing non-ASCII characters, but cannot parse the part of mail addresses containing non-ASCII characters, that is, mail addresses in RFC 6532 format and RFC 2047 email addresses are not compatible. Since an email containing an email address in RFC 6532 format is delivered to an email system that does not support RFC6532, it may cause delivery failure, or the sender email address cannot be recognized and read, or the recipient cannot reply correctly. Therefore, a mechanism is required. Let the mail system supporting RFC6532 find out whether the recipient's mail system...

AI Technical Summary

Problems solved by technology

However, this will generate a large number of SMTP links that do not actually deliver letters. It is easy for the current mail system to think that the address is conducting an SMTP attack and blacklist the address. Moreover, SMTP is a TCP link that establishes and executes queries. low efficiency

Correspondingly, in order to reduce redundant SMTP queries, a corresponding caching mechanism can be established, but this requires certain additional development work

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