Can't send mail from ISPConfig box
I'll attempt to explain this as best as possible. I have two domain names. fireflythemud.com and serenity-tech.com which all host their sites fine, I received email outside of the network fine.
Here's the kicker, any email sent from the box will not be received. I've narrowed down the reason. Simply put, my ISP is blocking all outgoing SMTP (port 25) traffic, except for their own mail servers traffic. This means that I can receive on port 25, but I can't send on port 25.
My question is this. Is there ANY way I can have the capability of receiving mail through the mail server box I host, and send mail through the ISP's mail server. Perhaps a configuration of sorts? What might make it more complicated is I have to authenticate all outgoing mail with my ISP with my ISP user name and password(optional, but preferred).
Thank you for the attention, hope to hear from you in the morning.