Microsoft outlook occasionally has an issue with receiving multiple email recipients from external programs like System Five. Even though the format is correct in the address line ( someuser@sample.com; anyuser@sample.com ), you may still receive the following error:
Solution
The workaround is fairly simple. In System Five, instead of using a semicolon between email addresses, use a comma. Then in Outlook, click on File, then Options. This will open the Outlook Options window. Now click on Mail in the left-hand window, and then put a checkmark in the check box next to “Commas can be used to separate multiple message recipients”.
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