I've been seeing errors in the osTicket log sporadically throughout the day and saw a similar thread which was unanswered. Here are a few errors.
- Unable to email via SMTP:mail.xxxxxx.com:26 [support@xxxxxx.com] Failed to send data [SMTP: Invalid response code received from server (code: -1, response: )]
- Unable to email via SMTP:mail.xxxxxx.com:26 [support@xxxxxx.com] Failed to set sender: support@xxxxxx.com [SMTP: Invalid response code received from server (code: -1, response: )]
- Unable to email via SMTP:mail.xxxxx.com:26 [careers@xxxxx.com] Failed to send data [SMTP: Invalid response code received from server (code: -1, response: )]
What could be the issue? It seems that the emails are going though.