Sender address rejected You are not in...

Posted on 2012-09-10
Last Modified: 2015-08-17
Hi All.

My crm (which is hosted) is sending newsletters to contacts inside and outside the company.
Exchange 2010 rejects these emails initialy of course with the Sender address rejected: You're not in!> #SMTP#
Now I fixed this to temporarily by just changing the senders address into something else than my own domain. Not very nice. To fix it more correct I created a new connector which allows email to be send from two external emailaddresses of my provider. Still this did not do the trick. Can anybody tell me what I did wrong or miss? Thanks! Thomas.
Question by:tmhooft
    LVL 63

    Expert Comment

    by:Simon Butler (Sembee)
    That isn't an Exchange error.
    What else is on the server? Do you have something between Exchange and the internet? An Appliance for example?

    LVL 52

    Expert Comment

    by:Manpreet SIngh Khatra
    You can add it to the Accepted Domain and then try.

    - Rancy
    LVL 2

    Expert Comment

    LVL 1

    Author Comment

    Hi guys,

    Thanks for the answers.  Simon, there is indeed an Appliance (smoothwall Advances FW) which routes email after  SPAM and Virusses checks. I added the domains as whitelists spam addresses which used to work. Are you sure this is not exchange? Is adding a connector as I did enough for exchange to accept email from that outside source with the same domain name?
    LVL 63

    Accepted Solution

    That isn't an Exchange NDR. Exchange isn't as "nice" as that.
    With most appliances, you have to tell it what domains you are using, not just white list them. Then it will pass the email on correctly. I haven't used Smoothwall for many years - does it do recipient validation? Perhaps via LDAP?

    Exchange doesn't care about the sender, so the fact that you are sending email from an outside source with the same name will not be a problem for Exchange - the issue is your appliance.


    Featured Post

    IT, Stop Being Called Into Every Meeting

    Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

    Join & Write a Comment

    Use email signature images to promote corporate certifications and industry awards.
    Disabling the Directory Sync Service Account in Office 365 will stop directory synchronization from working.
    Windows 8 comes with a dramatically different user interface known as Metro. Notably missing from the new interface is a Start button and Start Menu. Many users do not like it, much preferring the interface of earlier versions — Windows 7, Windows X…
    The video tutorial explains the basics of the Exchange server Database Availability groups. The components of this video include: 1. Automatic Failover 2. Failover Clustering 3. Active Manager

    755 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    24 Experts available now in Live!

    Get 1:1 Help Now