When I send an e-mail /var/log/maillog (sendmail) reports:
Dec 5 08:56:54 mydomain sm-mta[30576]: STARTTLS=client, error:
SSL_CTX_use_certificate_file(/etc/ssl/certs/server.csr) failed
Dec 5 08:56:54 mydomain sm-mta[30576]: STARTTLS=client, error:
SSL_CTX_check_private_key failed(/etc/ssl/certs/server.key): 0
Dec 5 08:56:54 mydomain sm-mta[30576]: STARTTLS=client, error: load verify
locs /etc/ssl/certs/, /etc/ssl/certs/server.csr failed: 0
Dec 5 08:56:54 mydomain sm-mta[30576]: STARTTLS=client, relay=smtp.gmail.com.,
version=TLSv1.3, verify=FAIL, cipher=TLS_AES_256_GCM_SHA384, bits=256/256
The messages go through. I use a certificate issued by gmail
- if it's invalid I can't pick up mail with POP.
russell bell