TLS 1.0 with Outlook 2010 and Windows XP

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Hello,

we have a Postfix Server Version 3.3 and Openssl 1.1.1 on Ubuntu 18.04  
LTS. One user has the need to send e-mail from an age old Windows XP  
VM used because of a special not any more available software. I have  
tried to not deactivate TLS 1.0 as Outlook/XP should be able to use  
this, but i got the error "no shared cipher" in Postfix log. To my  
knowledge XP does not support AES and Openssl 1.1.1 does not suggest  
3DES or RC4 as far as i can see.
Are there any settings in Postfix to force RC4/3DES in the Cipherlist  
for TLS 1.0?

Thanks

Andreas