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Disable and remove X400 from Exchange 2010

Hi all,

We have an Exchange 2010 environment that was previously migrated from Exchange 2003 and we still have X400/500 set on some user accounts as also distribution/security groups.

What is the best way to stop X400? Is there a generic way to stop the protocol or shall we use scripts to remove X400 addresses from users and groups?

Once we remove X400 and a user replies to an old email will any impact from client side? Will they receive any error?

Thanks.

Jian An Lim

if you don't have legacy application that used X400, you just use a script to remove the X400.

and if you worry too much, just remove a few and see. Usually we haven't seen any major issues on X400. and new email should use X500 by now if you are on Exchange 2010 for a while.

Please do not removed X500.

Tom Cieslik

You can check who is using X400 and if you'll find you don't need it you can remove it

Get-Mailbox -ResultSize Unlimited | Where {$_.EmailAddresses -like "X400:*"}

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You can run script to remove X400

$Recipients = Get-Mailbox -ResultSize Unlimited | Where {$_.EmailAddresses -like "X400:*"}
foreach ($Recipient in $Recipients)
{
[array]$AllEmailAddresses = $Recipient.EmailAddresses
[array]$NoX400Addresses = $Recipient.EmailAddresses | Where {$_ -notlike "X400:*"} 
Set-Mailbox -Identity $Recipient.Identity -EmailAddresses $NoX400Addresses 
}

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Qlemo

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Member_2_7968778

ASKER

Hi all,

Can someone answer my question.

Once we remove X400 via scripts and a user replies to an old email will any impact from client side? Will they receive any error?

Qlemo

I've answered that in the comment to get accepted.