> For the complete documentation index, see [llms.txt](https://docs.emaildelivery.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.emaildelivery.com/docs/troubleshooting-mta-related-errors-in-the-email-marketing-interface.md).

# Troubleshooting MTA related errors in the email marketing interface

- [HTTPConnectionPool Max retries exceeded with url: /settings](https://docs.emaildelivery.com/docs/troubleshooting-mta-related-errors-in-the-email-marketing-interface/httpconnectionpool-max-retries-exceeded-with-url-settings.md)