Hello,
I'm encountering an issue with establishing an SSL/TLS handshake when trying to connect to the SMTP server mail.ezonlinetools.com from my Contabo server.
Here's the command I'm using:
openssl s_client -connect mail.ezonlinetools.com:587 -starttls smtp -tls1_2
openssl s_client -connect mail.ezonlinetools.com:587 -starttls smtp
openssl s_client -connect mail.ezonlinetools.com:465 -starttls smtp
`openssl s_client -connect mail.ezonlinetools.com:587 -starttls smtp -tls1_2
CONNECTED(00000003)
140242699470736:error:14094410:SSL routines:ssl3_read_bytes:sslv3 alert handshake failure:s3_pkt.c:1493:SSL alert number 40
140242699470736:error:1409E0E5:SSL routines:ssl3_write_bytes:ssl handshake failure:s3_pkt.c:659:
no peer certificate available
No client certificate CA names sent
SSL handshake has read 265 bytes and written 0 bytes
New, (NONE), Cipher is (NONE)
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
Protocol : TLSv1.2
Cipher : 0000
Session-ID:
Session-ID-ctx:
Master-Key:
Key-Arg : None
Krb5 Principal: None
PSK identity: None
PSK identity hint: None
Start Time: 1710152538
Timeout : 7200 (sec)
Verify return code: 0 (ok)
`
I'm not able to establish a secure connection with the server.
Please help me to resolve this issue.
Thanks.
