Keep getting multiple error messages every day, why?

Ill get this error and others several times a day, and up until now I have never really paid any attention to them since most people still received my mail I sent. Will this cause any deliverability issues? My mail works (although some mail is not always delivered (I use sparkpost as a deliver agent)) and would this error have anything to do with it?

Is it normal to see this error window so many times per day? I am not sure why it does this.

here is a picture of the issue 

I also get this error message when I just tried to send mail. 

Wake up, support team.
I need an answer to this as well.