# 550 Verification Failed ´No Such User' (Callback verification)

**URL:** <https://meta.discourse.org/t/550-verification-failed-no-such-user-callback-verification/95560>\
**Category:** Self-hosting\
**Created:** [August 24, 2018, 10:05am UTC](https://meta.discourse.org/t/550-verification-failed-no-such-user-callback-verification/95560 "2018-08-24T10:05:51Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![itsbhanusharma](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/itsbhanusharma/32/180717_2.png) [@itsbhanusharma](https://meta.discourse.org/u/itsbhanusharma)\
**Post date:** [August 24, 2018, 10:15am UTC](https://meta.discourse.org/t/550-verification-failed-no-such-user-callback-verification/95560/2 "2018-08-24T10:15:23Z")

</div>

I see that you have enabled cloudflare on your mx records as well!

Can you try again by disabling cloudflare on your mx domain/subdomain?

I Noticed your forum runs on http not https is there a purpose for that?

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_[View the full topic](https://meta.discourse.org/t/550-verification-failed-no-such-user-callback-verification/95560)._