Exim4 and LE certs



Can you advice me with configure TLS Exim + LE:

for MAIN_TLS_PRIVATE_KEY i use live/domain.tld/privkey.pem

But for MAIN_TLS_CERTIFICATE i need use live/domain.tld/cert.pem or live/domain.tld/fullchain.pem ?



Docs seem to indicate tls_certificate would require fullchain.pem:

The file named by tls_certificate may contain more than one certificate. This is useful in the case where the certificate that is being sent is validated by an intermediate certificate which the other end does not have.

Not sure what the difference between tls_certificate and MAIN_TLS_CERTIFICATE is, but I would expect it to be similar.