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I've got a Postfix with Courier IMAP mail server mostly set up. IMAP authentication works as expected on port 143 (when SSL is disabled), but whenever SSL is enabled or port 993 is used, nothing happens.

Literally, the server sends no data:

openssl s_client -connect localhost:993

CONNECTED(00000003)
write:errno=104
---
no peer certificate available
---
No client certificate CA names sent
---
SSL handshake has read 0 bytes and written 317 bytes
---
New, (NONE), Cipher is (NONE)
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
---

I've made sure that TLS_CERTFILE, specified in /etc/courier/imapd-ssl, exists and is referenced correctly.

I've also made sure IMAPDSSLSTART=1 and IMAPDSTARTTLS=YES.

I'm at a loss...

  • Try looking at your logs. – Michael Hampton Aug 2 '14 at 19:11
  • There don't appear to be any entries in mail.log from imapd-ssl at all – TheToolBox Aug 2 '14 at 19:21
  • (nor in syslog) – TheToolBox Aug 2 '14 at 19:27
  • Post all relevant configuration files and logs (yes, even if you don't spot anything there). – sebix Aug 3 '14 at 11:47
  • I'm experiencing the same issue, have you had any success? – notlesh Dec 1 '14 at 22:39

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