Hi all,

I am sorry for my English, but I need help. We have Exchange 2013 and MS Outlook 2007 / 2010 / 2013.

Problem is:

I created Distribution group SFO@domain.cz

I set group delegation Send As: domain user

When I send e-mail by using OWA From SFO@... It is OK

When I send e-mail by using outlook From SFO@... I get: This message could not be sent. Try sending .... Error code is [0x80070005-00000000-00000000].

Can anybody help my??

Thanks for your help.

Hello

tip: https://support.microsoft.com/en-us/kb/2918777/

Thanks.

I try this solution but:

outlook 2013 -> It is perfect

outlook 2007 -> It is perfect

outlook 2010 -> I got the same error as sooner.

• Edited by hunter_x 1 hour 14 minutes ago

Hi,

So, this problem only occurred on Outlook 2010 until now, right?

I would like to suggest to clear the nickname cache entry from the AutoComplete list in Outlook client to check if there is any improvement.

Reset the nickname

https://support.microsoft.com/en-us/kb/287623/en-us?wa=wsignin1.0

Best Regards

Thanks.

I try this solution but:

outlook 2013 -> It is perfect

outlook 2007 -> It is perfect

outlook 2010 -> I got the same error as sooner.

• Edited by hunter_x Thursday, April 23, 2015 6:12 AM

Thanks everybody.

Now, everything is functioning. I don't know, why it didn't work before. I tried your solutions again and it has started work.

Hi,

If the solution in that link solved your problem. Please mark it as answer to close this case.

Best Regards.