Whitelisting a sender in Exchange 2010

Recently took on admin duties for an on-premises Exchange Server 2010.

One of my Exchange users is not receiving an email he needs, and we suspect Exchange is filtering it.  (He's using a Mac, with the Mail app, not Microsoft Outlook, fyi.)

My question: what are the specific steps I would take to allow delivery of email messages from senders with addresses ending in @senderguy.com?
John AtkinsonIT ConsultantAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

AmitIT ArchitectCommented:
timgreen7077Exchange EngineerCommented:
Unless you have malware and/or spam filtering installed on exchange, then exchange itself isn't filtering it. do you know if you have that feature installed or not. Also does inbound mail come straight to you exchange servers, or do the mail hit an inbound gateway first that handles your mail hygiene, and the sends to your internal exchange. if that is the case, you will need to look at the inbound gateway first.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
John AtkinsonIT ConsultantAuthor Commented:
We don't have on-server spam filtering, as far as I know.  We do subscribe to an inbound gateway, (Duocircle.com) but the message collection there in our account does not contain any copies of the missing messages.
Determine the Perfect Price for Your IT Services

Do you wonder if your IT business is truly profitable or if you should raise your prices? Learn how to calculate your overhead burden with our free interactive tool and use it to determine the right price for your IT services. Download your free eBook now!

timgreen7077Exchange EngineerCommented:
They may be rejecting it, and if so there will not be a copy. I don't know anything about Duocircle but see if you can whitelist the email address there and if so that should allow the email to be delivered successfully to your user. Also does the sender get any bounce backs or anything that you know of?
AmitIT ArchitectCommented:
Do you have any update to Share.
timgreen7077Exchange EngineerCommented:
Provided answers to author. Closing ticket unless author reopens requiring assistance.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.