Hello all,I am running osTicket v18.104.22.168, since 4th February, so for almost 1 year now.After the initial installation everything ran and we never had a problem.Now, three days ago, without changing anything on the system, I (as administrator) started getting email alerts every 10 minutes with the following message:companynameThe supprising thing is that it still works. Email will still be fetched, support tickets are created and email notifications are sent.Still, I get this error/alert notification every 10 minutes.I have contacted 1and1, my web hosting/email provider, to ask if anything has changed on the mail server. But they claim that nothing has changed and just point to the recommended POP/IMAP settings which I am already using. I tried POP and IMAP, with and without SSL, but even without SSL enabled, I will still get the message with "SSL negotiation failed". And I cannot blame 1and1 because their settings are working, and even without SSL, osTicket keeps sending me this alert.Is there a known problem about this? What else can I do to analyze this problem?Is it recommended that I update my osTicket to the latest version?Thank you in advance!