# Certificate mix up

**URL:** <https://community.letsencrypt.org/t/certificate-mix-up/56985>\
**Category:** Server\
**Created:** [March 19, 2018, 12:41pm UTC](https://community.letsencrypt.org/t/certificate-mix-up/56985 "2018-03-19T12:41:48Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![didier.voeltzel](https://avatars.discourse-cdn.com/v4/letter/d/b19c9b/32.png) [@didier.voeltzel](https://community.letsencrypt.org/u/didier.voeltzel)\
**Post date:** [March 19, 2018, 12:41pm UTC](https://community.letsencrypt.org/t/certificate-mix-up/56985/1 "2018-03-19T12:41:48Z")

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Hi,

I use 2 servers IIS. each of them run an unique web site  
for each site (each server) I created a lets’encrypt certificate  
I use them in the binding for each web site.

From any navigator when I reach one web site it’s OK but when I reach the second one I have a message:  
the certificate isn’t corresponding to the web site (effectivley the certificate is from the first web site…)  
Naturally I check the certificate for each binding and the certificate are OK.  
To be sure I recreated the certificates but I have always the same trouble.

Any suggestion is welcome

Regards

Didier

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**Author:** ![stevenzhu](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/stevenzhu/32/18864_2.png) [@stevenzhu](https://community.letsencrypt.org/u/stevenzhu)\
**Post date:** [March 19, 2018, 12:52pm UTC](https://community.letsencrypt.org/t/certificate-mix-up/56985/2 "2018-03-19T12:52:39Z")

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Hi,

Can you share your domain name so we can see what’s happening?

Thank you

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<div class="post-metadata">

**Author:** ![didier.voeltzel](https://avatars.discourse-cdn.com/v4/letter/d/b19c9b/32.png) [@didier.voeltzel](https://community.letsencrypt.org/u/didier.voeltzel)\
**Post date:** [March 19, 2018, 2:44pm UTC](https://community.letsencrypt.org/t/certificate-mix-up/56985/3 "2018-03-19T14:44:34Z")

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Hi,

The problem is now solved. But I don’t know why…(perhaps firewall…)

Thank You

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<div class="post-metadata">

**Author:** ![didier.voeltzel](https://avatars.discourse-cdn.com/v4/letter/d/b19c9b/32.png) [@didier.voeltzel](https://community.letsencrypt.org/u/didier.voeltzel)\
**Post date:** [March 19, 2018, 2:46pm UTC](https://community.letsencrypt.org/t/certificate-mix-up/56985/4 "2018-03-19T14:46:45Z")

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Hi,

If you want to have a look

[https://unisylva.m-files.sedasis.com](https://unisylva.m-files.sedasis.com)  
[https://unisylva.m-files.sedasis.eu](https://unisylva.m-files.sedasis.eu)  
[https://riastudio.m-files.sedasis.com](https://riastudio.m-files.sedasis.com)

Thank You

Didier

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<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/letsencrypt/original/3X/c/a/ca6c06ea1ea201324bba7048c6841ce60236468d.png) [@system](https://community.letsencrypt.org/u/system)\
**Post date:** [April 18, 2018, 2:46pm UTC](https://community.letsencrypt.org/t/certificate-mix-up/56985/5 "2018-04-18T14:46:47Z")

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