# SSO errors - some emails receive "Validation failed: Primary email is not allowed."

**URL:** <https://meta.discourse.org/t/sso-errors-some-emails-receive-validation-failed-primary-email-is-not-allowed/144484>\
**Category:** SSO\
**Created:** [16 במרץ,‏ 2020,‏ 3:41pm UTC](https://meta.discourse.org/t/sso-errors-some-emails-receive-validation-failed-primary-email-is-not-allowed/144484 "2020-03-16T15:41:44Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![codinghorror](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/codinghorror/32/110067_2.png) [@codinghorror](https://meta.discourse.org/u/codinghorror)\
**Post date:** [20 במרץ,‏ 2020,‏ 7:05pm UTC](https://meta.discourse.org/t/sso-errors-some-emails-receive-validation-failed-primary-email-is-not-allowed/144484/4 "2020-03-20T19:05:53Z")

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Check your blocked emails in Admin, Logs, Screened Emails. And remember emails that are too close to the blocked emails (such as `superdave` versus `superdave1`) will also be blocked.

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_[View the full topic](https://meta.discourse.org/t/sso-errors-some-emails-receive-validation-failed-primary-email-is-not-allowed/144484)._