On Thu, 22 Dec 2011 09:17:47 +0000, uklogistics wrote: > > >Hi > >We have an internal SCO unix server that sends emails internally and externally via our exchange 2007 SMTP connector. > >The problem is , that we have locked down our distribution groups (requires authentication), to only accept internal emails, however when the SCO unix server sends an email to an internal distribution group, the email bounces. > >#550 5.7.1 RESOLVER.RST.AuthRequired; authentication required ## > >How can I allow the exchange server to accept emails addressed to internal distribution groups sent from the SCO unix server, as this server cannot authenticate with AD? SCO should be capable of using ESMTP and using AUTH. All you need to do is provide the admin with an AD account to use. --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

On Fri, 30 Dec 2011 09:19:03 +0000, uklogistics wrote: > > >Hi Rich > >Created a new receive connector, restarted the MS Transport service , and then tested a few hrs later. Same NDR is being generated. Are the settings correct? What else do i need to do? thanks Try this one, first: http://www.petri.co.il/authenticated-or-anonymous-smtp-relay-with-exchange-2007.htm These instruct you to set up the connector with "Externally secured" permission, which I find to be too much permission: http://technet.microsoft.com/en-us/library/bb232021(EXCHG.80).aspx http://blogs.technet.com/b/exchange/archive/2006/12/28/3397620.aspx --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

On Wed, 28 Dec 2011 11:49:40 +0000, uklogistics wrote: >i have checked with the guys that administer this SCO server, and they advised the following; > >With your current implementation it is not possible to provide the required authentication information. > >Is there a way on Windows SBS to allow this server allow specific servers on LAN that cannot authenticate to send emails to internal distribution groups? > >I.e. can the server be added to AD as a computer, so that it is somehow authenticated on the domain? > > > >if so please advise steps. thanks Create a new Receive Connector and add the IP address of the SCO server (or any other server) to the remote IP address range. Then configure that connector to allow anonymous relay. --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

If the server cannot authenticate then you are going to have to turn off authentication control on the groups and either use group membership combined with a email address for the server to be listed on the Accept emails from, or possibly transport rules. Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

On Thu, 22 Dec 2011 09:17:47 +0000, uklogistics wrote: > > >Hi > >We have an internal SCO unix server that sends emails internally and externally via our exchange 2007 SMTP connector. > >The problem is , that we have locked down our distribution groups (requires authentication), to only accept internal emails, however when the SCO unix server sends an email to an internal distribution group, the email bounces. > >#550 5.7.1 RESOLVER.RST.AuthRequired; authentication required ## > >How can I allow the exchange server to accept emails addressed to internal distribution groups sent from the SCO unix server, as this server cannot authenticate with AD? SCO should be capable of using ESMTP and using AUTH. All you need to do is provide the admin with an AD account to use. --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

Hi We have an internal SCO unix server that sends emails internally and externally via our exchange 2007 SMTP connector. The problem is , that we have locked down our distribution groups (requires authentication), to only accept internal emails, however when the SCO unix server sends an email to an internal distribution group, the email bounces. #550 5.7.1 RESOLVER.RST.AuthRequired; authentication required ## How can I allow the exchange server to accept emails addressed to internal distribution groups sent from the SCO unix server, as this server cannot authenticate with AD? Thanks

Hi Rich Created a new receive connector, restarted the MS Transport service , and then tested a few hrs later. Same NDR is being generated. Are the settings correct? What else do i need to do? thanks

Hi Thanks for your reply i have checked with the guys that administer this SCO server, and they advised the following; With your current implementation it is not possible to provide the required authentication information. Is there a way on Windows SBS to allow this server allow specific servers on LAN that cannot authenticate to send emails to internal distribution groups? I.e. can the server be added to AD as a computer, so that it is somehow authenticated on the domain? if so please advise steps. thanks