Outlook tries to forward as a recipient account

Hi Everyone,

I've been browsing the web for about an hour without any solid leads so I wanted to see if this rings any bells for anyone.

Environment is Exchange 20013.  I have a user with Outlook 2007 who has their 2013 Exchange account configured (ABC.com) as well as a secondary POP3 account (123.com).

The behavior I am seeing is that when the user receives email from other users (all users from what I can tell) in the POP3 account domain (123.com) and then tries to open or forward that email, Outlook will try to send as the original sender.

For example, my user@123.com receives an email from sender@123.com.  When user tries to forward that email, Outlook tries to send as sender@123.com.

Naturally, Outlook errors out with a permissions error (you do not have permission to send on behalf of this user).

I've been looking in account settings and haven't found any leads.  Also not user how Exchange is factoring into the equation, but the error looks Exchange related.  Also, 123.com is not an accepted domain in the Exchange organization.

Thanks for the help.
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It seems like you need to specify which e-mail account to use to send a message, I have found some help on how to do this on the vendor's website as follows:

If you have set up multiple e-mail accounts in Microsoft Outlook, you can specify which account to use when sending a message.

In the message, click Accounts.
Click the account you want to use.


By default, e-mail is sent by using the account specified as the default in the E-Mail Accounts Wizard (Tools, E-mail Accounts command). For example, your default account may be your work e-mail account, but you can specify to send a message from another e-mail account, such as your personal Internet service provider (ISP) account.
Sending messages from your ISP account may require you to be connected to that provider in order to receive permission to use the e-mail server. Contact your network administrator or ISP for more information.
ITEdgeAuthor Commented:
Hi 1md,

Thanks for the reply.  I have seen a few postings as well like this.  Unfortunately when I select the account, while it does change the "this email will be sent using <email account>" text above the To/From fields, the From field remains the original sender@123.com sender.

I could go into the From and manually specify the Exchange or POP account, but this user is not going to want to do that, given the number of emails received from 123.com

I should also note that as far as I am aware, this was not a problem before our migration from Exchange 2003 to 2010/2013 (brief time in 2010 as we couldn't jump from 2003 to 2013) but I am again unsure if Exchange is even a factor.
Check for add-ins to Outlook that have been installed. It sounds like Outlook is going wrong (and against normal process).
ITEdgeAuthor Commented:
Thanks for the Replies... I have had more time to dig and it seems that somehow draft messages of the received emails are showing up in the Inbox.  I'll have to close this question and open another if I need.

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ITEdgeAuthor Commented:
I kept looking at the issue and the pattern of the problem which has set me on a new path trying to figure out what it happening.
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