Avatar of PlexioUK
PlexioUK
Flag for United Kingdom of Great Britain and Northern Ireland asked on

Allow external users to relay through exchange 2010

Hi we need to allow associates who have an email account on an SBS2011 box (which they access via POP3) to relay mail via the same server.  At present they cannot relay - they get '550 5.7.1 Unable to relay'.

I assume that a new connector is required for this, but am unsure of how to set this up to allow external relay without compromising the security of Exchange.

Thanks.
Exchange

Avatar of undefined
Last Comment
PlexioUK

8/22/2022 - Mon
Alan Hardisty

Follow the advice in the following guide and make sure you restrict access to just your associates IP or you will be an Open Relay:

http://technet.microsoft.com/en-us/library/bb232021.aspx

Create a new Receive Connector then allow it to relay.  2 simple steps.

Alan
PlexioUK

ASKER
Thanks for that Alan - but the problem we have is that all the associates are home based and are using ADSL connections with dynamic IPs.  Ideally what I would like to do is to allow them to relay, but to authenticate before doing so.
ASKER CERTIFIED SOLUTION
Alan Hardisty

Log in or sign up to see answer
Become an EE member today7-DAY FREE TRIAL
Members can start a 7-Day Free trial then enjoy unlimited access to the platform
Sign up - Free for 7 days
or
Learn why we charge membership fees
We get it - no one likes a content blocker. Take one extra minute and find out why we block content.
Not exactly the question you had in mind?
Sign up for an EE membership and get your own personalized solution. With an EE membership, you can ask unlimited troubleshooting, research, or opinion questions.
ask a question
PlexioUK

ASKER
Thanks Alan - I think OWA is going to have to be the way forward as not all associates have Outlooks - thanks.

Neil
Your help has saved me hundreds of hours of internet surfing.
fblack61