Link to home
Start Free TrialLog in
Avatar of Albert Widjaja
Albert WidjajaFlag for Australia

asked on

Remote Server returned '<mail.mycompany #5.7.1 smtp; 554 5.7.1 Error: need authentication from mail.client.com>'

Hi People,

I've got this error message today even after registering the SPF record in my public DNS succesfully:

Remote Server returned '<mail.mycompany #5.7.1 smtp; 554 5.7.1 Error: need authentication from mail.client.com>'

Open in new window


What I'm trying to do is that I wanted to allow Client.com who is our outsourced marketing partner to send out promotion email on behalf of my users mailbox in mycompany.com, I'm using Exchange Server 2013 while the marketing company is on AWS all in cloud.

How to allow this to work ?
ASKER CERTIFIED SOLUTION
Avatar of Dr. Klahn
Dr. Klahn

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Avatar of Albert Widjaja

ASKER

Hi Dr. Klahn,

What sort of credentials that I need to share with them to allow email routing on my Exchange Server ?

I've never heard that before.
SOLUTION
Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Thanks all,

It turns out that I need to whitelisted the IP address in the SPAM filter to allow this to happens.

Yes, I know the risk, at least with the white listing, I know which IP address can do the relay.

I have added THEIR SPF entry to my public DNS record. Hopefully this is correct action I am taking.
Thanks all.