I'm running EE 2.6.1. I have setup a form using Freeform 3.5 but it wasn't sending notifications. I went through the Solspace troubleshooting guide and double-checked everything there. I found this thread and tried everything recommended there, to no avail. Here's where I am at this point...
I have already been using Mandrill to get around clients' server settings, so I did that from the get go on this site. However, when the Freeform form wouldn't send I tried a test from the Communicate tool. With SMTP set and using my Mandrill credentials, I get these errors:
A PHP Error was encountered Severity: Warning Message: fsockopen() [function.fsockopen]: unable to connect to smtp.mandrillapp.com:587 (Connection timed out) Filename: libraries/Email.php Line Number: 1884
A PHP Error was encountered Severity: Warning Message: Cannot modify header information - headers already sent by (output started at /home/closeit/public_html/dashboard/codeigniter/system/core/Exceptions.php:170) Filename: core/Common.php Line Number: 408
An Error Was Encountered Unable to send email at this time. The following SMTP error was encountered: 110 Connection timed out Unable to send email using PHP SMTP. Your server might not be configured to send mail using this method.
So I've tried switching the mail protocol to both PHP Mail and Sendmail. And although I receive the "Your email has been sent" notification, I never receive the email.