# How to re-enable TLS 1.0 in MIAB

**URL:** <https://discourse.mailinabox.email/t/how-to-re-enable-tls-1-0-in-miab/7545>\
**Category:** Help with Setup/Upgrade\
**Created:** [January 20, 2021, 7:46am UTC](https://discourse.mailinabox.email/t/how-to-re-enable-tls-1-0-in-miab/7545 "2021-01-20T07:46:47Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![alento](https://discourse.mailinabox.email/user_avatar/discourse.mailinabox.email/alento/32/1371_2.png) [@alento](https://discourse.mailinabox.email/u/alento)\
**Post date:** [January 20, 2021, 10:29am UTC](https://discourse.mailinabox.email/t/how-to-re-enable-tls-1-0-in-miab/7545/4 "2021-01-20T10:29:07Z")

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Try this thread then:

> [@Heads up before upgrading to 0.44 if you have macOS 10.11 users](https://discourse.mailinabox.email/t/heads-up-before-upgrading-to-0-44-if-you-have-macos-10-11-users/6059):
>
> If you have clients using macOS 10.11 El Capitan, they will not be able to connect to MIAB 0.44. macOS 10.11 has TLS 1.2 support, but (annoyingly) Apple Mail 9.3 (the version in that OS) does not, and MIAB 0.44 is configured to only use 1.2 and 1.3. I solved this by re-enabling TLSv1 in both postfix and dovecot. I wish I didn’t have to, but my users win, and the hardware they are on won’t run a later macOS…

I have no idea if it will help or not as I am completely against doing something as insecure as what your bosses are telling you to do. You did warn them of the consequences I presume?

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_[View the full topic](https://discourse.mailinabox.email/t/how-to-re-enable-tls-1-0-in-miab/7545)._