# Mattermost ssl certificate is expired

**URL:** <https://sel4.discourse.group/t/mattermost-ssl-certificate-is-expired/148>\
**Category:** Site Feedback\
**Created:** [March 1, 2020, 12:50am UTC](https://sel4.discourse.group/t/mattermost-ssl-certificate-is-expired/148 "2020-03-01T00:50:41Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![lazycandle55](https://yyz2.discourse-cdn.com/free1/user_avatar/sel4.discourse.group/lazycandle55/32/51_2.png) [@lazycandle55](https://sel4.discourse.group/u/lazycandle55)\
**Post date:** [March 1, 2020, 12:50am UTC](https://sel4.discourse.group/t/mattermost-ssl-certificate-is-expired/148/1 "2020-03-01T00:50:41Z")

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Period of Validity: March 1, 2017 to February 29, 2020

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**Author:** ![kent.mcleod](https://avatars.discourse-cdn.com/v4/letter/k/7ab992/32.png) [@kent.mcleod](https://sel4.discourse.group/u/kent.mcleod)\
**Post date:** [March 2, 2020, 6:09am UTC](https://sel4.discourse.group/t/mattermost-ssl-certificate-is-expired/148/2 "2020-03-02T06:09:05Z")

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`mattermost.ts.data61.csiro.au` now has a new Let’s Encrypt certificate until a new `*.ts.data61.csiro.au` certificate can be obtained.