Alresco email configuration with smtp.office365.com error

[EjikeAlfie]

Hi All,

I have implemented Alfresco outbound email configuration to send mail to smtp.office365.com with the following configuration below:

# Outbound Email Configuration
#-------------
mail.host=smtp.office365.com
mail.port=587
mail.protocol=smtp
mail.username=username@companydomain.com
mail.password=user-password
mail.encoding=UTF-8

# Use SSL for secure communication
mail.smtp.starttls.enable=true
mail.smtp.auth=true

# Debugging (optional)
mail.debug=true

But when I execute a workflow with email notification, I get the following error below:

2025-03-05T12:11:35,335 [] ERROR [action.executer.MailActionExecuter] [mailAsyncAction4] Failed to send email to [mogunleye] : org.springframework.mail.MailSendException: Failed messages: com.sun.mail.smtp.SMTPSendFailedException: 554 5.2.252 SendAsDenied; "authenticated email address" not allowed to send as "sender email address"; STOREDRV.Submission.Exception:SendAsDeniedException.MapiExceptionSendAsDenied;

Can anyone please assist me on how to resolve this issue or anyone with good experience of Office365 email?

Thanks in advance.

[Florian_Priede]

Error 554 means that your email server does not allow user abc@company.com to send mails on behalf of user def@company.com .  This is a configuration issue you should search for. This is not related to Alfresco, as it seems to be able to properly communitate with office365 . com already.