I am getting this when looking at my logs after a power outage on the server.
[demo@mail mailcow-dockerized]$ sudo docker compose logs -f --tail=200 postfix-mailcow
postfix-mailcow-1 | Mar 8 15:01:21 491dba0cb64b postfix/smtpd[15246]: discarding EHLO keywords: CHUNKING
postfix-mailcow-1 | Mar 8 15:01:22 491dba0cb64b postfix/smtpd[15246]: Anonymous TLS connection established from mail-tycjpn01hn2215.outbound.protection.outlook.com[52.100.215.215] to mail.dccathome.com: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
postfix-mailcow-1 | Mar 8 15:01:22 491dba0cb64b postfix/smtpd[15246]: discarding EHLO keywords: CHUNKING
postfix-mailcow-1 | Mar 8 15:01:25 491dba0cb64b postfix/smtpd[15246]: CD737200CC7: client=mail-tycjpn01hn2215.outbound.protection.outlook.com[52.100.215.215]
error from daemon in stream: Error grabbing logs: invalid character '\x00' looking for beginning of value