From: josecss.es@gmail.com   
      
   El 04/11/2025 a las 18:17, ...w¡ñ§±¤ñ  escribió:   
   > Jota.Ce wrote on 11/3/2025 12:55 PM:   
   >> Hi there.   
   >>   
   >> Anyway... Last year, SeaMonkey Mail worked without problems with   
   institutional mail account (MS 365 ecosystem). Since we are jailed, SeaMonkey   
   >> can't retrieve/send mails, but i can't really know why. Maybe they are   
   blocking the port? At home, that settings work as expected.   
   >>   
   >> Outlook works, ThunderBird works if i choose Exchange account, but not if i   
   choose POP acount (didn't try on IMAP).   
   >   
   > OAuth2 required. POP3 and IMAP not supported.   
   >   Outlook and Thunderbook support OAuth2.   
   >   
   >    
   > OAuth 2.0 is required for institutional Microsoft 365 accounts because   
   Microsoft has deprecated basic authentication (username/password) for   
   > services like Exchange Online, and is now requiring OAuth 2.0 for modern   
   authentication. This means that applications and services must use   
   > OAuth 2.0 to access M365 data, as most older methods are being phased out to   
   improve security.   
   >   
   > Why OAuth 2.0 is required   
   > Security: OAuth 2.0 provides a more secure way for applications to access   
   M365 data without using the user's password directly.   
   >   
   > Modern Authentication: Microsoft is moving to modern authentication methods,   
   and basic authentication for protocols like POP, IMAP, and SMTP is   
   > being disabled for new accounts and eventually for all accounts.   
   >   
   > Application access: Any third-party application or service that needs to   
   interact with M365 services, such as sending emails via Exchange, must   
   > be configured to use OAuth 2.0.   
   >    
   >>   
   >   
   >   
   >   
   SeaMonkey *does* support OAuth2 authentication. In fact, and as i've said, my   
   MS365 account is working at home with POP/SMTP servers.   
      
   In my workplace, under domain restrictions/policies, it doesn't work, but   
   ThunderBird/Outlook can add Exchange accounts. I really don't know if   
   Seamonkey support Exchange protocol. It doesn't offer that option in New   
   account wizard.   
      
   And i don't know if it's a common issue for some other people.   
      
   Regards.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)