When I send an email to an external recipient (outside domain) and BCC: an internal recipient (local domain), the BCC: recipient never receives the email. Also, if an internal recipient is in the TO: field and an external recipient in the BCC: field, the external recipient gets the email but the internal recipient does not. I can consistently reproduce this. For example:
Scenario 1: TO: b...@microsoft.com<mailto:b...@microsoft.com> BCC: ad...@externalcompany.com<mailto:ad...@externalcompany.com> BCC: collea...@externalcompany.com<mailto:collea...@externalcompany.com> In this case, everyone receives their email as expected. Scenario 2: TO: fri...@mylocalhost.com<mailto:fri...@mylocalhost.com> BCC: ad...@mylocalhost.com<mailto:ad...@mylocalhost.com> BCC: collea...@mylocalhost.com<mailto:collea...@mylocalhost.com> Again, in this case, everyone receives their email as expected. Scenario 3: TO: b...@microsoft.com<mailto:b...@microsoft.com> BCC: ad...@mylocalhost.com<mailto:ad...@mylocalhost.com> BCC: collea...@mylocalhost.com<mailto:collea...@mylocalhost.com> In this case, neither ad...@mylocalhost.com<mailto:ad...@mylocalhost.com> nor collea...@mylocalhost.com<mailto:collea...@mylocalhost.com> receive the email. Scenario 4: TO: ad...@mylocalhost.com<mailto:ad...@mylocalhost.com> BCC: ad...@externalcompany.com<mailto:ad...@externalcompany.com> BCC: collea...@externalcompany.com<mailto:collea...@externalcompany.com> In this case, ad...@mylocalhost.com<mailto:ad...@mylocalhost.com> doesn't receive the email but the external recipients do receive the email! It appears that as long as the recipients are either all in external domains or all in the same local domain, it works Ok. But when a BCC: recipient is specified and the other recipients are split across external and internal domains, the local recipients never get the mail regardless of whether they were in the BCC: or TO: fields. Has anyone seen this behavior? Thanks, Rich