Outlook 2010 Exchange / SMTP: unable to send

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Andreas Thumfart


I'm using Outlook 2010 with 3 email accounts. One of this accounts is an exchange account. Now, the problem is, if I'm out off the office and not connected to Exchange, I'm not able to send email messages from each of the 3 accounts. Cause the other 2 accounts use SMTP for mail transmission, this shouldn't happen.

I always get the message " Connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action" . But, this failure doesn't occure everytime, and if i set Outlook to work offline, click send in my email and then click " send and receive" , the email is sent without any problems.

Further details:
The first of my SMTP accounts is the default outlook account and uses the outlook.pst (default data file). This account is fully seperated from the others.
The second SMTP account uses the same data file as the exchange account and is defined as default sending email address.

Any Ideas about this?

Kind regards



Hi Andreas,

Can you provide a couple more details about your setup? when you say that the account is completley seperated from the others, do you mean its in its own profile? I gather you have all the accounts in one profile at the moment? The second two accounts, they are SMTP accounts do they work when you are in the office, are they configured for mail accounts at your office, thats not a exchange server?

As for connecting to the exchange server, are you able to access remotely, that could explain the Exchange Unavailable message you get, you can find out from IT if theres a way to connect to you MB remotely.

Its my personal recommendation though if you dont need the 3 accounts together, simply create a new mail profile for the SMTP accounts, keeps everything nice and neat and all you need to do to access the other email is restart outlook, set the profile to Prompt for Profile to use and off you go.



Andreas Thumfart


The seperated account is an SMTP/POP3 account. It only has its own data file, not an onw profile. The other two accounts (the second SMTP/POP3 account and the exchange account) use the same data file. The SMTP accounts work from everywhere and the servers are not located at the office.

I can't access the exchange server from outside of the office, so its correct that i receive the message, but the SMTP accounts should work. And as explained, the error doesn't occur everytime i try to send an email, when not connected to exchange.

It would be possible to seperate the first SMTP account from the second SMTP and the exchange account in a seperated profile, but i can't seperate the others.

Kind Regards

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