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Hi there ! I'd like to use `prefect.utilities.notifications.slack_notifier` behind a proxy. A search in the docs and in the slack community give nothing so before submitting a new issue I wanted to check if I was not missing something ! :slightly_smiling_face: Thanks

It shouldn't really matter right? It's an outgoing connection from your scheduler to Slack's servers

My scheduler is also behind the proxy so I guess I do need to pass proxy information to the post request ?

I have prefect server running on the same machine as my flows

oh so you need a proxy for outbound connections?

it looks to me like the notification handler makes a call using <http://requests.post|requests.post> and there is no proxy hook, unless you can integrate this in the webhook url somehow

I am guessing it wont be hard to plugin your own to be honest

Hi <@U01NYDB8FJR>! Thanks for checking in here before opening an issue. Thanks for chiming in <@U01BBN9FY4X>. I understand the need here. You can open an issue, but I honestly can’t guarantee that team will choose to work on it.

Thanks both. I will open the issue then :wink:
`<http://requests.post|requests.post>` accepts a `proxy` argument, so it looks pretty simple to add a keyword argument to `prefect.utilities.notifications.slack_notifier` and pass it to `<http://requests.post|requests.post>` .
I might spend some time to draft a PR for it.