Undelivered Mail Returned to Sender - Microsoft Community

hi,

i regularly send emails our desktop (work, outlook) personal account. suddenly, morning, received email reply mailer daemon (5 of them, because forwarded 5 emails work account personal account) following contents:

from mailer daemon:

this mail system @ host zsmtpsg2.jfc.com.ph.

i'm sorry have inform message not delivered 1 or more recipients. it's attached below.

for further assistance, please send mail postmaster.

if so, please include problem report. can delete own text attached returned message.

                   mail system

<*** email address removed privacy ***>: host apc.olc.protection.outlook.com[104.47.126.33]
    said: 550 5.7.1 unfortunately, messages [52.74.215.116] weren't sent.
    please contact internet service provider since part of network
    on our block list (as3150). can refer provider to
    http://mail.live.com/mail/troubleshooting.aspx#errors.
    [pu1apc01ft043.eop-apc01.prod.protection.outlook.com] (in reply mail
    command)

hoping immediate response.

thank you.

rudolf merck

unfortunately, messages [52.74.215.116] weren't sent.
please contact internet service provider since part of network on our block list (as3150).

it seems ip address has been assigned provider has been used abusive activities , therefor blocked. instructed in error, contact internet provider , can either unblock or assign new address.

Office / Outlook / Windows other / Office 2007