# Responder ao próprio e-mail cria um novo tópico

**URL:** <https://meta.discourse.org/t/reply-own-mail-creates-new-topic/74519>\
**Category:** Product Support\
**Created:** [21 Novembro , 2017 15:14 UTC](https://meta.discourse.org/t/reply-own-mail-creates-new-topic/74519 "2017-11-21T15:14:09Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![gwmngilfen](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/gwmngilfen/32/302925_2.png) [@gwmngilfen](https://meta.discourse.org/u/gwmngilfen)\
**Post date:** [21 Novembro , 2017 16:25 UTC](https://meta.discourse.org/t/reply-own-mail-creates-new-topic/74519/3 "2017-11-21T16:25:06Z")

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Aha, so there is a setting, interesting. I see it says “WARNING: disabling this allows user impersonation based on email address” - how does this happen? Presumably it’s some kind of header shenanigans?

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