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Google Workspace Smtp Relay
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Google Workspace Smtp Relay

xemorytrxemorytr Member

Hello everyone ,
I want to know your knowledge about something,

I have a Plesk server and I did the postfix configuration. When I define the purchased e-mail address and password from the Admin console, I can send an e-mail.
But when I add a second domain, I cannot send mail.
The server ip address is added to the allowed list via the admin console.

What I want to ask is, is it not possible to send e-mails via a second domain and e-mail address other than the main account?

Thank you for your answers.

Comments

  • jarjar Patron Provider, Top Host, Veteran
    edited July 2022

    Gmail doesn’t allow you to spoof From headers and the tech media considers it a bug, as do they, if it passes through them that way. That’s my understanding from when I last saw articles on the subject, anyone feel free to correct me if I’m wrong.

  • @jar said:
    Gmail doesn’t allow you to spoof From headers and the tech media considers it a bug, as do they, if it passes through them that way. That’s my understanding from when I last saw articles on the subject, anyone feel free to correct me if I’m wrong.

    actually like this; The error I got from a second domain and a second e-mail address:

    This is the mail system at host xxxx.com.

    I'm sorry to have to inform you that your message could not
    be delivered to one or more recipients. It's attached below.

    For further assistance, please send mail to postmaster.

    If you do so, please include this problem report. You can
    delete your own text from the attached returned message.

                   The mail system
    

    : host smtp-relay.gmail.com[142.250.102.28] said:
    550-5.7.0 Mail relay denied [serverip]. Invalid credentials for relay
    for 550-5.7.0 one of the domains in: domainname (as obtained from HELO
    and MAIL 550-5.7.0 FROM). 550-5.7.0 Email is being sent from a domain or IP
    address which isn't registered 550-5.7.0 in your G Suite account. Please
    login to your G Suite account and 550-5.7.0 verify that your sending device
    IP address has been registered within 550-5.7.0 the G Suite SMTP Relay
    Settings. For more information, please visit 550 5.7.0

    The server ip address is attached. The allowed ip address is attached.
    In the main account, the server can send via the IP address.
    The above problem occurs when the subject is a second domain and a second e-mail address.

  • @xemorytr said: Invalid credentials for relay

  • @TimboJones said:

    @xemorytr said: Invalid credentials for relay

    Actually everything is correct.
    2 days later, a response came from the support team.
    Since you are a new account, there is a problem because of this.
    This type of blocking is normal for new accounts.
    Thank you everyone.

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