for work we have a remote dedicated server to run our webservice that also runs our email services, at home(comcast residential internet) i cannot send mail using the dedicated server's SMTP, comcast spits back a error saying i can only use their SMTP server for sending mail

at work(comcast business internet) we can use our dedicated server for sending mail with no problem

so i set up a box at work to forward smtp traffic, i'm new to all this networking stuff by the way

i used delegate to forward smtp traffic, can someone point me in the right direction on how to use this program(delegate) to fix our issue

the delegate command i used to test is : delegated -P25 SERVER="smtp://dedicated.server.com:25" PERMIT=":::" -v

i also opened up port 25 on the router so it points to my boxes ip

are there any other ways to fool comcast into thinking im using my works ip to send mail, my coworkers and i are unable to send mail from home for some time now

thanks