For about a month many of emails I send have not not been received. There is is no indication this is happening until I learn from intended recipients that they have not got the mail I sent. The emails appear as normal in my sent folder.
I am receiving emails as normal.
The problem is intermittent. I keep thinking it's cured then it happens again, sometimes for a few few hours, sometimes a few days.
I use the account for work emails, so really need to able to reply on it. It has happened with emails sent from my phone as well my laptop.
How can I fix this?