==== Required information ====
- iRedMail version (check /etc/iredmail-release): 0.9.7 OPENLDAP edition.
- Linux/BSD distribution name and version: CentOS Linux release 7.4.1708 (Core)
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): LDAP
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro? No (Free)
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====
I encountered a problem about SMTP over TLS/SSL. it seems the problem has solved now but that was so strange for me. Because I tried with 465 and 587 in all modes (TLS/ SSL/ Auto ) separately but outlook show error:
"The mail server does not support encryption type ...."
also I have seen some time it showed "Contact ISP or network Administrator"
Also POP3 using SSL in 995 works fine each time in outlook test while adding the account.
I tried with different Internet line, but no success. also I have tried many times but each time I got those notification.
Restarting Service doesn't helpful. After completely restart server, I can continue with 587 in TLS Mode and finish adding the account.
I have use free version, I was wondering that let me know if any difference is here between Business and Free in source code. Also I would appreciated if any help is existed here about whats the cause of these incident. Could it be considered both Internet lines were faulty? (Or something else)
it is clean install without any config edit with latest update from centos Official repository.
I use outlook 2013. Just remove old account and then suddenly suffer that.
Thanks in advance.