Exchange 2010, Outlook 2010 kickback message

I have an outlook 2010 user that when replying to an email gets this kickback and the reply-to email address gets changed to .local which is invalid

#550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found ##

What causes the change to .local?
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Amit KumarCommented:
It is possibly outlook cache or wrong contact issue. check if any contact saved by .local e-mail address or cache is there which is having .local e-mail address.

To isolate it, try sending mail from OWA and careful don't choose e-mail address from cache.
dgrendaAuthor Commented:
Can I just clear the cache?

How do you do that?

Amit KumarCommented:
First try with OWA, if issue is not there with OWA then you can play with Outlook.

1. When you composing mail in outlook and start typing name/address in to/cc you will be able to see hints, there will be a X botton to delete that cached name/address.
2. Check if any contact is saved by that e-mail address, delete or change e-mail address of that contact.

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Jeffery HayesSystem Support Technician Commented:
When you type in the name in the address bar click the X that show's it auto populating and manually type in the complete address in full.
dgrendaAuthor Commented:
thx for assistance, resolved.
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