[Python] SSLError on exchangelib : can't connect on the server

I have a problem with exchangelib. Here is my code:

creds = Credentials(
username="domain_name\\username",
password="password")

config = Configuration(server='mail.solutec.fr', credentials=creds)

account = Account(
primary_smtp_address="surname.name@lab-solutec.fr",
autodiscover=False,
config = config,
access_type=DELEGATE)


Here is the error I get:

SSLError: HTTPSConnectionPool(host='mail.solutec.fr', port=443): Max retries exceeded with url: /EWS/Exchange.asmx (Caused by SSLError(SSLError("bad handshake: Error([('SSL routines', 'ssl3_get_server_certificate', 'certificate verify failed')],)",),))


I can make it work by adding this:

from exchangelib.protocol import BaseProtocol, NoVerifyHTTPAdapter
BaseProtocol.HTTP_ADAPTER_CLS = NoVerifyHTTPAdapter


But it's just bypassing the security, so it's not what we want. If i use shared connection from my phone there is no error, so it looks like there is a problem with my enterprise proxy. I saw things about transport adapters but don't really understood how to make it work.

So, how can I make it work nicely without this bypassing solution ?

Thank you !

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