Setting up SMTP Gateway for HP multifunction's scan to email configuration

http://www.experts-exchange.com/Hardware/Peripherals/Printers_Scanners/Q_22123034.html

Question: We have a HP laserjet 4100 mfp that when we try to send

email, comes back and says "email gateway is not configured."
Can someone help me in setting this up?

Best answers:

Make sure that you have all these settings correct on the device:

IP address
Subnet mask
Gateway
DNS server(s)
SMTP server
If any of the above is wrong, email will fail.

Additionally, it may fail for one of the following reasons:

Authentication required to send email- if this is the cause you will need to configure the device to login with a username and password.
Relay blocking -if this is the cause you will need to configure the server to allow relays from the device.
Certificates required-if this is the case, you will need to set up a certificate for the device.

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i just had a look at there online manual (it is crap) but here we go.
Use the following procedure to find and configure your SMTP and LDAP gateways:
Select Find Send Gateways, in the I/O menu.
    If the search is successful, the addresses are set automatically. If it does not find either gateway, or another gateway address is preferred, enter them manually.

Step 14: Set the e-mail gateway addresses manually
   Use the following procedure to set the e-mail gateway address manually:
       Select SMTP Gateway, in the I/O menu and enter the gateway address.
       (forget about this for now, no need to complicate the situation) Select LDAP Gateway, in the I/O menu and enter the gateway address.
       Select Test Send Gateways to check the addresses have been configured correctly.

also
http://h20000.www2.hp.com/bc/docs/support/SupportManual/bpl10769/bpl10769.pdf
Domino shouldnt make any differance as it is just sending via SMTP so as long as outlook works so should the HP.