The problem is that I cannot send e-mails from my mail account email@example.com and firstname.lastname@example.org to hotmail and msn accounts.
When trying to send an e-mail to such an account, different things happen depending on the email address I sent it from.
When I'm sending the e-mail from email@example.com, I receive an automatic e-mail stating that the mail couldn't be delivered to the recipients.
However, when sending an e-mail from firstname.lastname@example.org, I do not get a notification saying that the e-mails I sent got blocked but the recipient does.
Could you please solve this problem as soon as possible, so I will be able to get in touch with my clients again.