yasminn on "[Plugin: MailPoet Newsletters] Newsletters not being distributed"

Further to the problem outlined on this forum on 16 July 2016, I went back to MailPoet to see if I could get the mail-out going. This time, I got the following errr message, but again, MailPoet does not advise how to fix the problem. Here is the error message: Total of batch: 6 / 70
The Send Process stopped because there are too many errors.
We kept all non delivered emails in the queue, so you will be able to resume the send process later.
Please verify your mail configuration and make sure you can send a test of this email.
If you recently, successfully, sent a lot of emails, those errors may also be due to your server limitations.

1 : Error Sending Message For Sale & Purchase: Exploration Permits held by Kondor Gold P/L for areas containing strong Gold & Antimony resources are up for sale by the Owners to [3rd party email redacted] | Bad useame / password => Next try in 0 minutes.

2 : Error Sending Message For Sale & Purchase: Exploration Permits held by Kondor Gold P/L for areas containing strong Gold & Antimony resources are up for sale by the Owners to [3rd party email redacted] | Bad useame / password => Next try in 0 minutes.

3 : Error Sending Message For Sale & Purchase: Exploration Permits held by Kondor Gold P/L for areas containing strong Gold & Antimony resources are up for sale by the Owners to [3rd party email redacted] | Bad useame / password => Next try in 0 minutes.

4 : Error Sending Message For Sale & Purchase: Exploration Permits held by Kondor Gold P/L for areas containing strong Gold & Antimony resources are up for sale by the Owners to [3rd party email redacted] | Bad useame / password => Next try in 0 minutes.

5 : Error Sending Message For Sale & Purchase: Exploration Permits held by Kondor Gold P/L for areas containing strong Gold & Antimony resources are up for sale by the Owners to [3rd party email redacted] | Bad useame / password => Next try in 0 minutes.

6 : Error Sending Message For Sale & Purchase: Exploration Permits held by Kondor Gold P/L for areas containing strong Gold & Antimony resources are up for sale by the Owners to [3rd party email redacted] | Bad useame / password => Next try in 0 minutes.

...end error msg.

I hope someone can shed a bit of light on this for me.

Graham

[Moderator Note: Please avoid posting unrelated 3rd party email addresses]