Why don't smtp work on prestashop?

Question

Email

hello, why is it giving this error?
Expected response code 250 but got code "553", with message "553 5.7.1 Sender address rejected: not owned by auth user."

Mail activated

Answer 1

I think that the problem may be in the domain name. Try to convert to Punycode.

Answer 2

Probably, in your settings, the outgoing mail address is not [email protected], but something else. If so, you need to create an appropriate mailbox on yandex pdd, and specify it as the username.
Those. you can't send a letter that has one address in the from field through a mailbox with a different address...