Docs: Replace deprecated IS_TLS_ENABLED mailer setting in email setup (#28205)

In the [docs for email
setup](https://docs.gitea.com/administration/email-setup)
`mailer.IS_TLS_ENABLED` is mentioned which was replaced by
`mailer.PROTOCOL` in release 1.18.0 according to
https://blog.gitea.com/release-of-1.18.0/ . This change wasn't reflected
in the docs for email setup. I just replaced the deprecated mailer
setting.
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CodeShakingSheep 2023-11-25 03:16:29 +01:00 committed by GitHub
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2 changed files with 2 additions and 2 deletions

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@ -61,7 +61,7 @@ PASSWD = `password`
- 通过端口 587 的 STARTTLS也称为 Opportunistic TLS。初始连接是明文的但如果服务器支持则可以升级为 TLS。
- 通过默认端口 465 的 SMTPS 连接。连接到服务器从一开始就使用 TLS。
- 使用 `IS_TLS_ENABLED=true` 进行强制的 SMTPS 连接。(这两种方式都被称为 Implicit TLS
- 使用 `PROTOCOL=smtps` 进行强制的 SMTPS 连接。(这两种方式都被称为 Implicit TLS
这是由于 Go 内部库对 STRIPTLS 攻击的保护机制。
请注意自2018年起[RFC8314](https://tools.ietf.org/html/rfc8314#section-3) 推荐使用 Implicit TLS。