[Exim] TLS | ehlo - STARTTLS failed with ssmtp

Hello List,

it concerns the following problem:

when I would like to send messages with ssmtp to exim over tls, exim
saith:

SMTP protocol error in "STARTTLS" H=name.name2.tld [217.83.168.247]
STARTTLS command used when not advertised

When I look at the source code from ssmtp I see that ssmtp do not use a
ehlo command at the beginning of the connection.

On the other hand I know that postfix ignore that failure and accept this
kind of mail.

My question: is it possible that exim can also accept the message; is
there a option to disable this strict checking?

Thank's