it then assumed it must be spam and blocked me from the account. I spent two hours last night with two different technicians and they kept telling me to change my password which I did multiple times. I also got a phone call back this morning from Microsoft by which time I had got into the account via my iPad and could access my emails on the iMac. Thinking it was sorted I let him go and then realised that I was unable to send emails from the iMac but still able to from my old PC and iPad. What do I need to do to be able to send from the iMac. I have divided my mailing list into small groups so if I fix this now it should not happen again,