If you would please post screenshots of your incoming server setting and your SMTP server setting, we may have suggestions. Thank you,

bonjour ci joint copie demandée cordialement

Ok, that is the incoming server info. At the bottom of that pane is a link to your SMTP server info. Please post a screenshot of that also. Thank you. Seeing information on both server settings usually aids in resolving the problem.

esr-ce cela?

ok, you have shown a different account. are you having problems with both? I see possible problem with this POP account. Please clarify which account(s) have the problem. I also need the SMTP server pane for each. You can locate them with these steps: - click to 'account settings' - scroll down left side to 'Outgoing Servers (SMTP) and create screenshots of each of the SMTP settings for the two accounts. They will be most helpful. Thank you.

Le probléme est le même sur toutes les adresses et est apparu hier en même temps

I will attempt to help, but I need the screenshots of server settings and the SMTP settings. See attached screenshots of where these are for each account.

bonjour j'ai résolu le problème en changeant de serveurs entrants SMTP Merci pour votre aide.

You are welcome. I was glad to assist. :)