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I'm running Kerio Mail Server on Red Hat 9. My ISP blocks all ports below 1024. So far I have everything working, except for receiving in-bound mail. I know it's possible through some round-about process to make it work, using a secondary email address, but I'm not doing something right. Any help on this would be appreciated.
if your ISP blocks all ports below 1024, then how would a regular mail client talk to the internet? (i.e. if you were running kmail, connecting to a corporate mail server).
It also seems you are a little confused (or maybe its just me). The title of your posting is Web Serving, and yet the topic is mail serving.
Either way, it seems to me the smartest thing to do is ask them to open up the ports you need (probably 110 and 25) for your mail server, or port 80 for your web server. I still think its unlikely they block everything below 1024, coz that would also break your web browser.
(Disclaimer - I know nothing about linux)
I'll be honest that I don't know exactly how they do it without messing up regular internet connections, but running a server through the standard ports is not possible. It's $250 per month to open the ports. Somehow in-bound
I know about using higher ports. Like I said originally, I have everything else working - even outgoing mail. My problem is how to set up the mx record to send to a port other than 25. The standard methods of port forwarding with web forwards is not working.
The port is specified through the software itself. However, the server sending the email has to somehow know to use that port. The default is 25. That's what I can't seem to get by because the MX record doesn't specify the port.
My zone is managed through ZoneEdit.com. I talked to one of their technical reps and they're adding an update to their service that will allow for forwarding mail to a port other than 25. I'll post the results once it's available and I get a chance to test it out.