I have a custom SMTP server set up in Manager. However, when sending emails I encounter the below error. Sometimes the emails send without this error and then sometimes I receive the error and I hit send again and the email goes through. Does anyone else have this same issue? I do not understand enough of computer technical language to know what the error message is trying to tell me.
This error message appears randomly and even after I have just successfully sent an email. It does not matter whether its invoices, payslips, statements etc, they all have this error randomly appear. Any suggestions on where the issue may lie? It ultimately doesn’t stop emails going through but is just an inconvenience as sometimes you will have to hit send multiple times before it will send.
Thanks for your help.