Kan geen e-mails versturen naar hotmail adressen, volgende melding komt steeds terug: Kan iemand helpen?
This is the mail system at host smtp.app.magix-online.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
hotmail-com.olc.protection.outlook.com[220.127.116.11] said: 550 5.7.1
Unfortunately, messages from [18.104.22.168] weren't sent. Please contact
your Internet service provider since part of their network is on our block
list (S3150). You can also refer your provider to
[AM5EUR03FT035.eop-EUR03.prod.protection.outlook.com] (in reply to MAIL