集合1：一些人或邮件列表在他们的邮件头上做了一些有趣的手脚，使得它们与众不同。

Set 1: a few people or mailing lists do funny things with their headers that get them flagged on other rules.

youdao

集合1：一些人或邮件列表在他们的邮件头上做了一些有趣的手脚，使得它们与众不同。

Set 1: a few people or mailing lists do funny things with their headers that get them flagged on other rules.

youdao