Unverified50% confidenceFactExact time
qmail率先通过破折号进行子地址分隔，后来Postfix等采用加号作为分隔符
1
Sources
50%
Confidence
Long-term
Relevance
8/20/2026
First Seen
Sources
Gmail点号忽略机制为何导致邮件误送给同名用户
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