New problem stream tls 1.3

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Dec 14 10:46:01 server postfix/smtpd[33721]: Anonymous TLS connection established from li1437-182.members.linode.com[45.33.110.182] to mail.madeinsouthafrica.com: TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256
Dec 14 10:46:02 server cbpolicyd[25034]: module=Quotas, mode=create, host=45.33.110.182, helo=[172.27.232.118], from=s_imhof@madeinsouthafrica.com, to=2019@lakeservers.com, reason=quota_create, policy=7, quota=4, limit=5, track=Sender:@madeinsouthafrica.com, counter=MessageCount, quota=1.00/200 (0.5%)
Dec 14 10:46:02 server postfix/smtpd[33721]: 6E60226058A: client=li1437-182.members.linode.com[45.33.110.182], sasl_method=PLAIN, sasl_username=s_imhof@madeinsouthafrica.com
Dec 14 10:46:02 server postfix/cleanup[33729]: 6E60226058A: message-id=
Dec 14 10:46:02 server opendkim[1627]: 6E60226058A: DKIM-Signature field added (s=default, d=madeinsouthafrica.com)
Dec 14 10:46:02 server postfix/qmgr[1258]: 6E60226058A: from=, size=916, nrcpt=1 (queue active)
Dec 14 10:46:02 server postfix/lmtp[33730]: 6E60226058A: to=, relay=server.companiondriver.com[private/dovecot-lmtp], delay=0.61, delays=0.56/0.02/0.02/0.01, dsn=2.0.0, status=sent (250 2.0.0 3ZaCL+p1uGHDgwAAw7guAw Saved)
Dec 14 10:46:02 server postfix/qmgr[1258]: 6E60226058A: removed
My new stream server is having many problems related to mail delivery.  Above is the error message I am getting when trying to send email from thunderbird client.