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Author Topic: email sent from dynamic IP address rejected

stefano tufillaro

Joined: 5/19/2017

Post email sent from dynamic IP address rejected
Tuesday, June 20, 2017 8:14:43 PM

Good Morning,
I have the domain ****.eu with your organization.
My ip address is dynamic .
I use web server, internal mail server 'natted' and firewalled as well.
I receive email from outsite in the mailbox named @****.eu.

When i send email from outside or from inside i receive (this an example) rejected my message [.....] error:
DY-001 (SNT004-MC5F22) Unfortunately, messages from xx.xx.xx.xx weren't sent. Please contact your Internet service provider. You can tell them that Hotmail does not relay dynamically-assigned IP ranges. You can also refer your provider to

I verified that the domain name is not in a blocked list in

Some suggestions ?

Thanks in advance

Stefano Tufillaro

Last edited by a moderator on Wednesday, June 21, 2017 3:11 PM

Timothy Wilkinson

Joined: 5/3/2002

Post Re: email sent from dynamic IP address rejected
Wednesday, June 21, 2017 8:12:59 AM

It seems that Hotmail rejects emails sent from dynamic IP addresses. You can use the SMTP outbound relay service to send emails through our dedicated SMTP relay server to avoid this problem.

Last edited by Timothy Wilkinson on Wednesday, June 21, 2017 3:13 PM

It is currently Monday, August 21, 2017 6:55 AM Mountain Standard Time