___  _____  ____  ____  _  _  _____  ____  ____
  / __)(  _  )(  _ \( ___)( \/ )(  _  )(_  _)(  _ \ 
 ( (__  )(_)(  )(_) ))__)  \  /  )(_)(  _)(_  )(_) )
  \___)(_____)(____/(____)  \/  (_____)(____)(____/
   PASTEBIN - CREATED: 2019/08/06 at 13:15 (CEST)

your paste:
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> openssl s_client -connect imapexo.global.corp.sap:993 -verify_return_error
CONNECTED(00000003)
depth=2 C = DE, L = Walldorf, O = SAP AG, CN = SAP Global Root CA
verify error:num=19:self signed certificate in certificate chain
139712866604160:error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed:../ssl/statem/statem_clnt.c:1921:
---
no peer certificate available
---
No client certificate CA names sent
---
SSL handshake has read 4753 bytes and written 322 bytes
Verification error: self signed certificate in certificate chain
---
New, (NONE), Cipher is (NONE)
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
    Protocol  : TLSv1.2
    Cipher    : 0000
    Session-ID: 59E5F3B79C58D74A200C4C16E6005F33C0ADB37BCE72BFE1F23342B375506F02
    Session-ID-ctx:
    Master-Key:
    PSK identity: None
    PSK identity hint: None
    SRP username: None
    Start Time: 1565090098
    Timeout   : 7200 (sec)
    Verify return code: 0 (ok)
    Extended master secret: no
---

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