Greetings, I'm Adam, I'll be helping you solve your issue!
Only hit the Accept button if my response helps resolve the issue, otherwise reply and we'll continue.
For the receive error, go to Tools, Accounts, select that mail account, Properties, Servers. Make sure the box for "Log on using Secure Password XXXXX" is unchecked.For the send error, what size is the attachment you are sending?Do you get the same error when sending a short email without anyattachment?
If you received a satisfactory answer to your question, click the Accept button!
If this just started happening recently, we should try this first,Click start > All Programs > Accessories > System Tools > System Restore
Follow the prompts to pick a restore date and time you are sure the issue wasn't on your computer (you may need to check the show more restore points box)Please let me know if the issue persists after the restoration, you will not lose any files rather this restores the settings that were on your computer before you had the issue.You can come back by bookmarking (add to favorites) for this web page.