Error while sending mail using office365 smtp details

@PaulMaxOS The best solution i found is in the following link. and it worked https://stackoverflow.com/questions/63579560/failed-to-authenticate-on-smtp-server-with-username-in-smtp-office365-com/70231003#70231003

@Sinnbeck I have done whatever steps are done in the link but didn't effect anything, and gives me same error

@deepakagarwal so if you check the user on the page it has a check in Authenticated SMTP? Remember to refresh the page before checking

Verify the Authenticated SMTP setting: unchecked = disabled, checked = enabled.

@deepakagarwal You might need to consider using the legacy endpoint: https://docs.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/opt-in-exchange-online-endpoint-for-legacy-tls-using-smtp-auth

@Sinnbeck but where to do this process, either in AAD

@deepakagarwal go to admin.microsoft.com as an admin user. Users->Active users->Click the user->Mail (tab)->Manage email apps

There you need to make sure that "Authenticated SMTP" is checked

@Sinnbeck as you said above for ensuring, it is checked and after that i have tried it but same error is going on while registering

@deepakagarwal Do you have other admins in your organization? Perhaps it has been disabled company wide: https://docs.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/authenticated-client-smtp-submission#disable-smtp-auth-in-your-organization

I want to ask the question as it takes 3 to 4 mins in loading and after that it says error, it should require queue process in mailable in laravel 8

@deepakagarwal Mine sends instantly, so I am unsure why it does not work for you.

@Sinnbeck whole project should i share with you or only paticular controller with mailable file

@deepakagarwal I dont think this is a code problem, if you are getting this error still SmtpClientAuthentication is disabled for the Mailbox. If the portal says that it is enabled, you could try contacting your Microsoft reseller, to have them check if some other permission is wrong, or create a support ticket with microsoft themselves.

@Sinnbeck what you have said , i already did it but again same bullshit error is occuring . is there another way to resolve it

@deepakagarwal Use a mail provider made for sending transactional emails, like mailgun or mailpace :)

@Sinnbeck is my client-based project and he is using the office365 mail provider for sending and receiving mails. so what would be the next solution for this

@deepakagarwal Don't know if you saw my comment above, but it looks like that Microsoft is deprecating this auth mechanism and you need to use the legacy auth endpoint: https://docs.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/opt-in-exchange-online-endpoint-for-legacy-tls-using-smtp-auth

@PaulMaxOS as you said above I had added smtp-legacy.office365.com in mail_HOST but it also gives me only above mentioned error

@deepakagarwal And microsoft says that the error is due to an error in your set up and not a misconfiguration in their end? The error implies that the error is at Microsoft, not in your code.

@Sinnbeck As far as I understood the docs, they're deprecating auth using legacy TLS. This might be the reason why he is not able to authenticate using his current TLS setup although everything's looking fine on his and on Microsofts end. That's why I suggested him to have a look at the auth using legacy TLS: He might be simply using the wrong endpoint.

@deepakagarwal ok... and you also did this?

To use this less secure endpoint, admins need to enable the following setting:

The value $true for the AllowLegacyTLSClients parameter on the Set-TransportConfig cmdlet.

@Sinnbeck I don't know from where the error is occurring, if you want any type of file I can share with you which files to see and check if any error from my side then help me out to resolve it as its making me complicating right now

@deepakagarwal My config is 100% the same as this on a new installation of laravel, and it works

MAIL_MAILER=smtp
MAIL_HOST=smtp.office365.com
MAIL_PORT=587
[email protected] <-check if these work at https://outlook.com
MAIL_PASSWORD=passwordForMail <-check if these work at https://outlook.com
MAIL_ENCRYPTION=tls
[email protected]
MAIL_FROM_NAME="${APP_NAME}"

@Sinnbeck Thanks for your support, now it's working fine as well

@deepakagarwal Awesome :) If it was solved, you can close the thread by marking a best answer

@Sinnbeck I have reset all configuration in AAD FROM START POINT AND ITS WORK NOW.

@deepakagarwal really happy to hear 👍

@Sinnbeck Thanks

@PaulMaxOS Thanks that worked for me