From: Anthony on
Hi.

I do very similar to this for a distribution list for our church.

Apologies if this is considered hijacking a thread.
However I'm running into an issue with it at the moment.
External users can send to list(a)domain.com which is the DL. That DL
contains a bunch of mail-enabled Exchange contacts (with their
associated external SMTP addresses)
However if someone sends to the list and one of the external
recipients generates a bounce, the bounce goes back to the list
address and so everyone gets the bounce.

Can anyone suggest how I can stop this from happening ?


Thanks,

Anthony

On Jun 4, 5:55 pm, Aznan <az...(a)discussions.microsoft.com> wrote:
> Thank you very much for the direction Ed, very much appreciated.
> --
> Aznan
> The International School of Penang (Uplands)
> Malaysia
>
> "Ed Crowley [MVP]" wrote:
> > 1.  I don't claim to know how "most" admins do this.  Techniques vary.  Your
> > idea is certainly one used  by some of them.
> > 2.  Yes.
> > 3.  The MailContact has two addresses.  One is the target address
> > (-ExternalMailAddress attribute), and the other is the "internal" address,
> > what you're calling the alias address.  Just leave it alone.
> > 3a.  When the contact is a member of a distribution group, mail sent to the
> > distribution group is routed to the target address of the contact.  If that
> > address is invalid, mail will, of course, bounce.
> > --
> > Ed Crowley MVP
> > "There are seldom good technological solutions to behavioral problems."
> > ..
>
> > "Aznan" <az...(a)discussions.microsoft.com> wrote in message
> >news:D4F869DE-EE5B-4C94-B391-D07AB7F5931C(a)microsoft.com...
> > > Hi, thanks for your post, very much appreciated but need some
> > > clarifications.
>
> > > I have managed to find a way to use powershell to bulk import the
> > > contacts.
>
> > > Question1:
> > > My question based on your reply that reads "A distribution group does not
> > > have SMTP addresses as members.  It can have mail-enabled contacts as
> > > members, though.  Therefore, you would have to create a mail-enabled
> > > contact
> > > for the SMTP address, then add the distinguished name of the contact to
> > > the
> > > member attribute of the distribution group"
>
> > > Is this how normally most Exchange Admins maintain/manage their
> > > Distribution
> > > lists that has external email addresses or i am doing something odd here?
> > > Is
> > > there any other better ways of doing it or is this the best and normal
> > > practise amongst most orgs?
>
> > > Question 2:-
> > > You mentioned mail-enabled contact.
> > > I went to create mail contact via Exch Mgmt Console > Recipient
> > > Configuration > Mail Contact > New Mail Contact.
>
> > > Is this how we create mail-enabled contact?
>
> > > Question 3:-
>
> > > I created a mail contact with external email address using the step above
> > > and am a bit confused cause when i go to the Properties of the contact
> > > that i
> > > have created and selected "E-Mail Addresses" Tab it has the external email
> > > address that i have entered but however it also automatically creates an
> > > "Alias" entry that contains firstname and lastname followed by the domain
> > > name which makes a valid smtp email address? is this an email address? can
> > > i
> > > ignore the Alias email address or do i have to delete it?
>
> > > If i add this contact to a DL and when anyone sends to this DL , will the
> > > sender get a non delivery bounce email since alias is not a valid mailbox
> > > ?
>
> > > Sorry some of my questions may seem something that is obvious, please
> > > assume
> > > i know nothing about Exchange.
>
> > > Thanks in advance
> > > --
> > > Aznan
> > > The International School of Penang (Uplands)
> > > Malaysia
>
> > > "Ed Crowley [MVP]" wrote:
>
> > >> A distribution group does not have SMTP addresses as members.  It can
> > >> have
> > >> mail-enabled contacts as members, though.  Therefore, you would have to
> > >> create a mail-enabled contact for the SMTP address, then add the
> > >> distinguished name of the contact to the member attribute of the
> > >> distribution group.  Certainly someone who knows PowerShell or VBScript
> > >> could craft a script that does this.  One trick, however, would be
> > >> cleaning
> > >> up contacts that are no longer members of the distribution group.
> > >> --
> > >> Ed Crowley MVP
> > >> "There are seldom good technological solutions to behavioral problems."
> > >> ..
>
> > >> "Aznan" <az...(a)discussions.microsoft.com> wrote in message
> > >>news:B2C20177-8988-4729-9242-D5AC384A2426(a)microsoft.com...
> > >> > We have just migrated from Mdaemon to Exchange 2007 SP2 and i'm still a
> > >> > newbie to Exchange 2007 Administration.
>
> > >> > I would like to create a distribution list that contains lists (> 1000)
> > >> > of
> > >> > external email addresses.
>
> > >> > The email addresses from this particular distribution list is very
> > >> > dynamic
> > >> > whereby it changes very frequently. That said, i will need to create an
> > >> > automated process to ensure that the email addresses on this
> > >> > distribution
> > >> > list is always up to date.
>
> > >> > My question:
>
> > >> > Is there a way to create a distribution list by importing a list of
> > >> > external
> > >> > email addresses from a CSV file ?
>
> > >> > What is the best way to maintain a distribution list that has external
> > >> > email
> > >> > addresses? (is it by creating a Mail Contact via Exchange Management
> > >> > Console
> > >> >> Recipient Configuration and then adding those email addresses to a
> > >> > Distribution list?)
>
> > >> > Please advise and thanks in advance
> > >> > Aznan Nagor
> > >> > The International School of Penang (Uplands)
> > >> > Malaysia
>
> > >> .
>
> > .

From: Rich Matheisen [MVP] on
On Wed, 16 Jun 2010 02:57:58 -0700 (PDT), Anthony
<anthony.warren(a)gmail.com> wrote:

>Hi.
>
>I do very similar to this for a distribution list for our church.
>
>Apologies if this is considered hijacking a thread.
>However I'm running into an issue with it at the moment.
>External users can send to list(a)domain.com which is the DL. That DL
>contains a bunch of mail-enabled Exchange contacts (with their
>associated external SMTP addresses)
>However if someone sends to the list and one of the external
>recipients generates a bounce, the bounce goes back to the list
>address and so everyone gets the bounce.
>
>Can anyone suggest how I can stop this from happening ?

Modify the properties of the DL so the NDR is sent to the group's
manager.
---
Rich Matheisen
MCSE+I, Exchange MVP
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