I don't have a direct answer as to why sendmail with a CC might not work - but that's a very, very old way of sending mails. The first thing I would try, because it's easy to do, is replacing it with a modern module such as Email::Stuffer. If you then still have the same problem, it might be a configuration issue on the side of the mailer - but even in that case, using the aforementioned module makes things easy, since you can simply switch to a different transport by using a different Email::Sender implementation.

In reply to Re: CC with sendmail? by haukex
in thread CC with sendmail? by htmanning

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