550 5.7.1 Client does not have permissions to send as this sender (office365)
550 5.7.1 Client does not have permissions to send as this sender (office365)
550 5.7.1 Client does not have permissions to send as this sender (office365)
Re: 550 5.7.1 Client does not have permissions to send as this sender (office365)
Beware that this error might also occur when the `from` email does not match the `username`.
So, be sure to test the value `[email protected]` is the same on `user` and `from`.
If it works when both fields have the same value and doesn't work when the from is different from the user, it means you should contact the company responsible for the email server and ask them to create a shared account and add `SendAs` priviledges for the account.
So, be sure to test the value `[email protected]` is the same on `user` and `from`.
If it works when both fields have the same value and doesn't work when the from is different from the user, it means you should contact the company responsible for the email server and ask them to create a shared account and add `SendAs` priviledges for the account.