is a self signed certificate always invalid the first time?

[Michael Felt]

On 8/11/2017 11:44 AM, Florian Beer wrote:
> On 2017-08-11 11:36, Michael Felt wrote:
>> I have looked at let's encrypt. Key issue for me is having to add a
>> lot python stuff that would otherwise not be on any server.
>
>
> I use acme.sh for all of my LetsEncrypt certs (web & mail), it is 
> written in pure shell script, so no python dependencies.
> https://github.com/Neilpang/acme.sh
Thanks - I might look at that, but as Ralph mentions in his reply - 
Let's encrypt certs are only for three months - never ending circus.