/mcp• If SMTP authentication is configured for IMAP client and SMTP address of the sender matches a proxy address or primary SMTP address for the authenticated user. • If SMTP authentication is not configured for the IMAP client and the SMTP address of the sender matches a proxy address or primary SMTP address for any Unity Connection user. Following are the types of recipient based on which Unity Connection processes the messages for each individual: • If the recipient maps to a VPIM contact, Unity Connection converts the message into a VPIM message, removing any attachment that is not allowed by the VPIM standard. Unity Connection either delivers the message to the specified VPIM location if the VPIM location is homed on the local server, or forwards it to another digitally networked Unity Connection server for delivery if the VPIM location is homed on that server. For more information on VPIM, see the Networking Guide for Cisco Unity Connection, Release 15, available at https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/15/networking/ guide/b_15cucnetx.html. • If the recipient maps to a user homed on the local server, Unity Connection performs the action specified on the Message Actions page of the profile for the user in Cisco Unity Connection Administration. For each type of message (voice, email, fax, or delivery receipt) you can configure whether the message is accepted and placed in the user mailbox on the Unity Connection server, relays the message to the user at an alternate SMTP address, or rejects the message and generates a non delivery receipt (NDR). • If the recipient maps to a user homed on a remote Unity Connection server, the message is relayed to the home server of the user that performs the action specified on the Message Actions page of the user profile. • If the recipient does not map to any of the above, Unity Connection either relays the message to the SMTP smart host or sends an NDR to the sender, depending on the option selected for the When a Recipient Cannot be Found setting on the System Settings > General Configuration page in Cisco Unity Connection Administration. By default, Unity Connection sends an NDR. If SMTP authentication is configured for the IMAP client and the SMTP address of the sender does not match a proxy address or the primary SMTP address for the authenticated user, the Unity Connection server returns an SMTP error that causes the message to remain in the client outbox. If SMTP authentication is not configured for the IMAP client and the SMTP address of the sender does not match any known user proxy address or primary SMTP address, Unity Connection places the message into the MTA bad mail folder (UmssMtaBadMail). Example Using IMAP and ViewMail for Outlook Consider an example of an organization ExampleCo. that uses Microsoft Outlook to access a Microsoft Exchange server for email. Each employee at the company receives corporate email at an address that follows the pattern firstname.lastname@example.com. ExampleCo wants employees to be able to use Outlook to access voice messages stored on the Unity Connection server. To allow employees to send, forward, or reply to voice messages in the Outlook client, ExampleCo deploys the Cisco Unity Connection ViewMail for Microsoft Outlook plugin. The Outlook client for each employee is configured to access the user account using IMAP. When Robin Smith at ExampleCo wants to send an email message to a coworker, Chris Jones, Robin composes a new email message to chris.jones@example.com. By default, Outlook is configured to route new email messages to the Microsoft Exchange server for delivery. Next, Robin wants to send Chris a voice message and selects the New Voice Message icon that opens the ViewMail for Outlook form. Robin again addresses System Administration Guide 140 Messaging Example Using IMAP and ViewMail for Outlook