# See the failed jobs in Sidekiq. (MailGun) failing to send emails

**URL:** <https://meta.discourse.org/t/see-the-failed-jobs-in-sidekiq-mailgun-failing-to-send-emails/373384>\
**Category:** Support\
**Tags:** email\
**Created:** [July 8, 2025, 3:12pm UTC](https://meta.discourse.org/t/see-the-failed-jobs-in-sidekiq-mailgun-failing-to-send-emails/373384 "2025-07-08T15:12:49Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Moin](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/moin/32/554653_2.png) [@Moin](https://meta.discourse.org/u/Moin)\
**Post date:** [July 8, 2025, 3:27pm UTC](https://meta.discourse.org/t/see-the-failed-jobs-in-sidekiq-mailgun-failing-to-send-emails/373384/2 "2025-07-08T15:27:20Z")

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Which port do you currently use?

> [@Proposed changes to discourse-setup because Digital Ocean blocks outbound smtp](https://meta.discourse.org/t/proposed-changes-to-discourse-setup-because-digital-ocean-blocks-outbound-smtp/66778/27):
>
> The issue with port 587 being blocked is a digital ocean issue. I’ve had several clients who just stopped being able to send mail because digital ocean started blocking the port without warning. It’s a trivial fix to switch to port 2525, though.

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