# openssl s_client -crlf -connect e4.echonyc.com:25 -starttls smtp -cert
/var/qmail/control/servercert.pem |grep DH
depth=3 C = GB, ST = Greater Manchester, L = Salford, O = Comodo CA
Limited, CN = AAA Certificate Services
verify return:1
depth=2 C = US, ST = New Jersey, L = Jersey City, O = The USERTRUST
Network, CN = USERTrust RSA Certification Authority
verify return:1
depth=1 C = GB, ST = Greater Manchester, L = Salford, O = Sectigo
Limited, CN = Sectigo RSA Domain Validation Secure Server CA
verify return:1
depth=0 CN = echonyc.com
verify return:1
250 DSN
jECbYvbeKEYxcQPMDHortQ4ehEWnJJ5fnUb5qNSCQSACgRRp0g5vLhyU5wcCkHml
Server Temp Key: DH, 1024 bits
New, TLSv1/SSLv3, Cipher is DHE-RSA-AES256-GCM-SHA384
Cipher : DHE-RSA-AES256-GCM-SHA384
quit
On 12/17/2020 2:07 AM, xaf wrote:
openssl s_client -connect e4.echonyc.com:993 -cipher "DH"
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