Hi,
We've recently noticed an issue where users who are cc'd in a message where a mailing list is also within the cc list are getting rewritten a user@invalid.domain.
This issue looks like it may be related to Outlook and how user names are displayed specifically. Here is an example:
To: test_user@gmail.com cc: listserv@lists.test.org; Williams, Peter;
"Williams, Peter" maps to a user e-mail in the Outlook Global Address book. When the message is sent the list will send the message with the first name and last name separated, for example the message will appear:
to: test_user@gmail.com cc: listserv@lists.test.org, Williams@invalid.domain, Peter@invalid.domain
This only seems to happen with users who are cc'd who are also members of the list that is being cc'd. For example in the scenario above my e-mail that is cc'd is also a member of listserv@lists.test.org.
This issue does not occur if the user e-mail address is listed before the mailing list in the cc field. So for example, if the cc in the scenario above contained Williams, Peter; listserv@lists.test.org; it would route properly.
Do you know what may be causing this? Please let me know if there is any additional information I may provide regarding this and I will try to respond as soon as possible.
Thanks and have a nice day! Peter