# Started getting 'Unknown To: Address" failures

**URL:** <https://meta.discourse.org/t/started-getting-unknown-to-address-failures/79525>\
**Category:** Support\
**Created:** [February 1, 2018, 5:27am UTC](https://meta.discourse.org/t/started-getting-unknown-to-address-failures/79525 "2018-02-01T05:27:14Z")\
**Posts on this page:** 1\
**Showing post:** 1

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**Author:** ![jedc768](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/jedc768/32/116532_2.png) [@jedc768](https://meta.discourse.org/u/jedc768)\
**Post date:** [February 1, 2018, 5:27am UTC](https://meta.discourse.org/t/started-getting-unknown-to-address-failures/79525/1 "2018-02-01T05:27:14Z")

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In the Discourse instance I help run, I’ve gotten a number of “Unknown To: Address” error reports recently… I’ve gotten it myself and have gotten a number of reports from users.

In my case, I was replying to a PM. Other cases were people replying to a topic by email and their messages getting rejected.

The weird things:

- We haven’t made any configuration changes recently, and have used the reply-by-email functionality since we created our Discourse site
- I don’t see any errors in the raw logs. on “/admin/email/rejected” I see the correct rejections like AutoGeneratedEmailError and UserNotFoundError, but not anything corresponding to the errors I’ve seen and other users have sent me

I’d appreciate any help in figuring out where to look to figure out what’s going on!

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_[View the full topic](https://meta.discourse.org/t/started-getting-unknown-to-address-failures/79525)._