Outgoing SMTP with startSSL not working

April 9, 2013 3.2k views
Hi All, Incomming mail with startssl on imap is working. Sending with plain text password is working I have check port: 587 this one is open. When i do a telnet session everything is working when. What can the problem when i want use my mail client and it cant make a secure connection. Using: Centos, Dovecot, Postfix
5 Answers
What mail client are you using?

Also do you have a self-signed or free cert? Depending on the mail client it may be rejecting it for that reason, but that is just a guess.

Does the mail client return a specific error message that might have more info?
I use self signed cert. Using thunderbird as client.
Error msg: try translate from dutch to english

Failed to send message.
An error occurred while sending e-mail: Failed to make a secure connection. With SMTP server mail.160bpm.com using STARTTLS Switching STARTTLS for that server or contact your service provider.
It also did not work using mail client of the iPad
Hi All,

I was realy stupid... 1 little change and it was done:

smtpd_use_tls = to


smtpd_use_tls = yes

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