i have been attempts to set up email addresses on my IMac, the addresses will come from my host server. when complete i will be able to send/ receive emails from my desktop instead of going to my host server. with direction from my host server i put in the various ports for IMAP incoming and SMTP, unchecked SSL. the host server says the SMTP port is to be 587 ...do not select SSL the incoming port is 143 ...do not select SSL they say to 'select' Automatically detect and maintain account settings & authentication is Password and do not 'select' allow insecure authentication. the incoming / SMTP servers are mail. MY URL.com i took a screenshot of the 'general 'tab problem is apple mail will not always 'save' what i click onto. i say 'not always' because sometimes it will save... only temporarily. when i don't receive / send what was working, i look back , and the 'port' and /or the 'SSL' is not saved. what needs to happen for this to save. i have 8 different email addresses. does IMac / apple mail have a limit to how many email addresses it allows?