# Changing Mail Server

**URL:** https://meta.discourse.org/t/changing-mail-server/204534
**Category:** Support
**Created:** [September 27, 2021, 10:14am UTC](https://meta.discourse.org/t/changing-mail-server/204534 "2021-09-27T10:14:47Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![Wseries](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/wseries/32/120443_2.png) [@Wseries](https://meta.discourse.org/u/Wseries)
#### Post date: [September 27, 2021, 10:14am UTC](https://meta.discourse.org/t/changing-mail-server/204534/1 "2021-09-27T10:14:47Z")

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I’m intending to change the SMTP mail server settings for my Discourse install by updating the details in the app.yml file.

Do the changes take effect immediately or will I need to do a rebuild? TIA.

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### Author: ![IAmGav](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/iamgav/32/235598_2.png) [@IAmGav](https://meta.discourse.org/u/IAmGav)
#### Post date: [September 27, 2021, 10:47am UTC](https://meta.discourse.org/t/changing-mail-server/204534/2 "2021-09-27T10:47:05Z")

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it does not take immediately.

There are 2 ways.

1. ` ./launcher rebuild app`

2. `./launcher destroy app` and then `./launcher start app`

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### Author: ![system](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/system/32/443519_2.png) [@system](https://meta.discourse.org/u/system)
#### Post date: [October 27, 2021, 10:47am UTC](https://meta.discourse.org/t/changing-mail-server/204534/3 "2021-10-27T10:47:57Z")

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