starttls Questions

Postfix and OpenJDK 11: "No appropriate protocol (protocol is disabled or cipher suites are inappropriate)" – CentOS

June 9, 2021
Steffen
7 Answers

I know there are some other questions (with answers) to this topic. But none of these was helpful for me. I have a Postfix server (postfix 3.4.14 on Debian 10 (Buster)) with the following configuration (only the interesting section): smtpd_tls_mandatory_protocols…

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I can't stop writing the body of email when I connect smtp by using openssl -starttls command. (centos 7)

June 8, 2020
Minsung Kwon
3 Answers

[root@ip-xxx-xxx-xxx-xxx xxxx]# openssl s_client -starttls smtp -connect smtp.gmail.com:587 CONNECTED(00000003) ~~~SKIP~~~ 250 SMTPUTF8 AUTH PLAIN ~~~SKIP~~~ 235 2.7.0 Accepted MAIL FROM: <~~~SKIP~~~> 250 2.1.0 OK t2sm4646317pgh.89 - gsmtp rcpt to: <~~~SKIP~~~> 250 2.1.5 OK t2sm4646317pgh.89 - gsmtp DATA 354 Go ahead…

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