Emails keep bouncing with error

Marketing & Content Hub Email Deliverability
1

Hi Everyone!

I’m pretty new to Hubspot and trying to send emails using the marketing tools, or one on one,to various agents and managers for my daughter who is seeking new reps. I am sending them one at a time and personalizing them in the body to that particular person. However, of the 4 I’ve sent so far, two were unopened and the other two keep bouncing with the following error message:

Your message couldn't be delivered toxxxxxxxxxxx because the remote server is misconfigured. See technical details below for more information.
The response from the remote server was:
550 Please turn on SMTP Authentication in your mail client. mail-wm1-f45.google.com [209.85.128.45]:43613 is not permitted to relay through this server without authentication.Does anyone know what this means or how I can fix it? I've tried resending several times with marketing email and one-on-one.thanks,Dawn
2

Hi @UltraViolet ,

There is probably something wrong with your SMTP settings. Please check out this post to see how you can configure these settings.

3

Well, this one may be above my paygrade. :). I’ve looked through the settings and think it’s all right. Also, if I send an email to one of my own email accounts or a friend, it works fine (although does end up in junk folder sometimes).