SMTP sender overview

Last Updated : Mar 20, 2024 |
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Resource Id: SMTP_Sender:611
These settings are used to configure the server and the server accounts that the voicemail server uses for sending e-mails using SMTP. Multiple servers can be configured.
  • The first entry is the default SMTP server used if there is no other entry that matches the domain specified in the outgoing e-mail address. This is also the entry used for inter-voicemail server traffic, for example between a centralized and backup voicemail servers.
  • Additional servers can be added when different settings are required for sending e-mails to specific domains. For example, the default can be configured for connections via the customer's internal network Exchange server with additional entries added for e-mails to external e-mail servers such as gmail.com.
  • Messaging Between Voicemail Servers: Distributed voicemail servers, primary/backup voicemail servers and IP Office Server Edition voicemail resilience all use SMTP to exchange information and messages between voicemail servers. When that is the case, the first entry in the SMTP Sender list must be the one used and needs to be configured for that service with the domain and server setting both matching the IP address or fully-qualified domain of the other voicemail server.

Example

In the example below:
  • The first entry is used for messages to other voicemail servers. The same address is used in both the domain and the server settings for the first entry, as the SMTP service that is used is running on the same server computer on which the voicemail service is running (for example, IIS SMTP on the Windows server).
  • The next entry is used for the emails that use the customer's general e-mail domain address with the server set to the customers e-mail server. A third entry has been added to send some e-mails generated by E-mail Actions in call flows direct to an external e-mail service.
  • The first two entries in the example above can be combined. Voicemail server to server synchronization uses the Domain setting only whereas other e-mail services use the Server address and other setting.

SMTP Sender Preferences

Setting
Description
Logging
If selected, SMTP logging by the server is enabled.
Server
This section is used to enter details of the SMTP server or servers to which the voicemail server sends its messages. Click on the + icon to add another entry using the settings below. The ^ and v icons can be used to adjust the order of the entries when several SMTP servers are specified.
Mail Domain
This field is used differently depending on whether it is the first entry in the list or not:
  • For the first server entry in the list: This is the default outgoing e-mail setting. It also sets the mail destination domain on which the voicemail server filters incoming messages (see below) and so is repeated on the SMTP Receiver tab.
  • Messaging Between Voicemail Servers: For messaging between voicemail servers, the first entry in the SMTP Sender list must be the one configured and used. Each server uses the SMTP server service on the same server computer as the voicemail service. For example a Windows-based server uses the SMTP e-mail provided by the IIS on the same server. The voicemail service also uses the domain set to filter incoming SMTP mails received by the SMTP server. For this to work, the domain entered should be the fully-qualified name of the server on which the voicemail server is running, for example vmpro1.example.com. Any incoming messages where the recipient mail domain is not exactly the same as the specified domain are ignored. The recipient can either by vmsyncmaster, vmsyncslave, or the name or extension of a mailbox on the voicemail server, for example Extn201@vmprocentral.example.com or 201@vmprocentral.example.com.
  • For subsequent entries: The domain specifies that these settings should be used for e-mails sent to the matching domain. The entry must be a fully-qualified name resolvable by DNS or an IP address.
Server
This specifies the IP address or fully-qualified domain name of the SMTP server to which messages are sent. Voicemail Pro supports SMTP communication over both SSL/TLS and plain text.
  • For the first server entry in the list: Where messaging between voicemail servers is being used (central, backup and or distributed servers), the first entry is used and will match the domain set above.
  • For subsequent entries: It will be the address of the e-mail server that will handle e-mails for recipients other than another voicemail server on the network.
Port Number
This is the port number on the SMTP server to which the messages are sent.
Sender (Identifier)
Note that some servers will only accept e-mails from a specific sender or sender domain. If left blank, the voicemail server will insert a sender using either the e-mail address set for the voicemail mailbox user if set or otherwise using the best matching name it can resolve from the IP Office.
Server Requires Authentication
This check box indicates whether the connection to send SMTP messages to the mail server requires authentication with that server. The authentication will typically be to the name and password of a mailbox account configured on that server.
Account Name
Sets the name to use for authentication.
Password
Set the password to use for authentication.
Use Challenge Response Authentication (Cram MD5)
If this check box is selected, the name and password are sent using Cram MD5.
Related links
'Email' System Preferences