Direct Smtp Transfer - Extended Feature - Panasonic DX-600 Service Manual

7.17. Direct SMTP Transfer - Extended Feature

Simple Mail Transfer Protocol (SMTP) is to transfer mail reliably and efficiently. An important feature of
SMTP is its capability to transport mail across networks, usually referred to as SMTP mail relaying by
employing SMTP server.
Direct SMTP transfer allows you to transmit documents to another Internet Fax directly employing no SMTP
server. To enables this feature, you must configure its static IP address, subnetmask, default gateway and
etc. accordingly. Domain Name System (DNS) must be required to run the system, so that hosts and some
additional records must be properly existed in DNS entries.
Please note that the system runs under DHCP dynamic updates with DNS meets its requirement also.
In other words, DHCP runs non-Dynamic Updates in the Domain Name System can not be applied for
Internet Fax who whish to enables Direct SMTP transfer function.
Further more, in common cases only email and web service from the Internet are permitted into the
corporate intranet, and corporate network administrators are extremely reticent to open the firewall for
other, incoming services, since each opened path represents additional, potential security threats.
So the Direct SMTP transfer can be operating throughout the organization's Intranet.
Capability exchanges and content negotiations are also available to take advantageous communication
between Internet Fax communications.
Several service extensions are newly assigned.
(1) The EHLO keyword value associated with this extension is "CONNEG"
(2) A parameter using the keyword "CONNEG" is added to the RCPT-TO command
Sender
Request for Capability
Edition 1.0
Establish TCP connection
220
EHLO
250 Response of CONNEG
MAIL FROM:<mgcs@panasonic.com>
250
RCPT TO:<june@panasonic.com> CONNEG
250 Capacity Exchange
Continue to follow the SMTP procedure
Direct SMTP Overview
Recipient
TCP Port No. 25
Check for Capability
Capability contents sample
250-<june@panasonic.com> recipient ok
250-(&(image-file-structure=TIFF-minimal)
250- (MRC-mode=0)
250- (color=Binary)
250- (|(&(dpi=204)
250-
250- (&(dpi=200)
250-
250- (&(dpi=400)
250-
250- (|(image-coding=[MH,MR,MMR])
250- (&(imagecoding=JBIG)
250-
250-
250- (size-x<=2150/254)
250- (paper-size=[letter,A4,B4]) )
250 (ua-media=stationery) )
279
(dpi-xyratio=[204/98,204/196]) )
(dpi-xyratio=[200/100,1]) )
(dpi-xyratio=1) ) )
(image-coding-constraint=JBIG-T85)
(JBIG-stripe-size=128) ) )
DX-600/800
APR 2002