i have 2 environment where i have upgraded from 7.3 to 7.4.1 and a fresh installation of 7.4.1 where out bound emails are not working
Here are below error in front end: Error:SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting
in suitecrm logs:
11/17/15 15:43:50 [2092][1][FATAL] SugarPHPMailer encountered an error: An outgoing mail server is not configured to send emails. Please configure an outgoing mail server or select an outgoing mail server for the mail account that you are using in Settings >> Mail Account.
11/17/15 15:43:50 [2092][1][FATAL] SugarPHPMailer encountered an error: SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting
Its known issue but i have not found any resolution on community.