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# Bypassing the SMTP server

You can send e-mail documents directly to their destinations without going through the SMTP server.

Normally, e-mail is sent through the SMTP server. With this feature however, the domain part of the destination's e-mail address is read as the SMTP server's address and transmissions bypass the SMTP server. Since this reduces the load on the server, you can send e-mails without having to take into account the transfer time from server to destination.

- To use this function, the following settings must be specified:

  - In “System Settings”, “SMTP Server”, in “File Transfer”, set the port number to “25”.

  - To specify the host name of the other party as the domain part of the e-mail address, register the host name of the other party on the DNS server.

  - For details about these settings, see “File Transfer”, Network and System Settings Reference.

- If the other party's IP address is not registered on the DNS server, specify the IP address at the domain part of the e-mail address.

- To send a document over an IPv6 network, you must specify the other party's host name (not IP address) as the domain part.

- To use this function, the other party's computer or server must:

  - be in an environment where e-mail can be received

  - be connected to the same LAN as this machine

  - support SMTP reception and have its reception protocol set to SMTP

- SMTP authentication set on the other party's computer or server is disabled when e-mail is sent using this function.

- If e-mail is sent from the other party using this function, even if reception fails, Error Mail Notification is not sent to the sender.

- When e-mail is sent using this function, even if transmission fails, the server does not send error notification e-mail.

- When using this function, you cannot send e-mail to the administrator e-mail address that is registered on this machine.

There are two ways of specifying a destination, as follows:

By specifying the other party's host name

Specify a destination's e-mail address by adding the other party's host name to the domain part of the e-mail address. Specify the address after the @ as follows: “host name”, “. (dot)”, and “domain name”.

xxxx@host name of the other party.domain name

For example, if the other party's e-mail address is “abc@defcompany.com” and the host name is “HOST”:

abc@HOST.defcompany.com

By specifying the other party's IP address

Specify a destination's e-mail address by changing the domain part of the e-mail address to the other party's IP address.

xxxx@[the other party's IP address]

For example, if the other party's e-mail address is “abc@defcompany.com” and the IP address is “192.168.1.10”:

abc@[192.168.1.10]

Use the following procedure to bypass the SMTP server.

Press [E-mail] to switch the transmission type to e-mail, and then specify a destination.

Press [SMTP].

Press [No].

Press [OK].

- If you use [Manual Entry] to specify the destinations directly, you can also specify whether or not to use SMTP server for each destination.

- If you use the destination list to select the destinations, the SMTP server setting specified in the Address Book is enabled.