The other day I changed the setting from SMTP to IMAP in Servers in Outlook Express and also the corresponding setting on the SKy Server. I don't appreciate the significance but I saw somewhere that it was the preferred setting.

It works OK, but there is no noticeable difference except I get the following warning each time I press send to send an email "The server you are connected to is using a secure certificate that could not be verified. The certificate CN name does not match the passed value. Do you want to connect using this server". I OK that and off it goes as usual.

Can anyone enlighten me and if IMAP is worth persevering with is there any way of disabling this warning please.