# Can’t send emails due to failed internal dns resolution

**URL:** <https://meta.discourse.org/t/can-t-send-emails-due-to-failed-internal-dns-resolution/43592>\
**Category:** Product Support\
**Created:** [May 3, 2016, 8:45am UTC](https://meta.discourse.org/t/can-t-send-emails-due-to-failed-internal-dns-resolution/43592 "2016-05-03T08:45:48Z")\
**Posts on this page:** 1\
**Showing post:** 15

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**Author:** ![clay](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/clay/32/102156_2.png) [@clay](https://meta.discourse.org/u/clay)\
**Post date:** [May 4, 2016, 4:34pm UTC](https://meta.discourse.org/t/can-t-send-emails-due-to-failed-internal-dns-resolution/43592/15 "2016-05-04T16:34:41Z")

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@gvalchca I had a similar problem with an internal install of Discourse. I noted the fix [in this thread](https://meta.discourse.org/t/images-no-longer-getting-lightboxed-part-3/24485/31). Basically, I had to add the address to the internal DNS server in the host machine’s Docker config file.

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_[View the full topic](https://meta.discourse.org/t/can-t-send-emails-due-to-failed-internal-dns-resolution/43592)._