Mail Gurus Please Help

[Doug Easterbrook]

using NO-IP — doesn’t mean you IP address won’t change.   in fact it will, and likely often.  Especially if you move service providers or even move houses (let alone states) with the same service provider.


the theory..    your IP address is doled out by a DHCP server on a router in some subnet where you are residing.  if you end up behind a different router or DHCP server, you get a NEW IP address because I’ve rarely seen routers that will determine you moved miles away and give you the same IP. 

I’ve only seen it once for cisco routers for an entire university where your IP followed you — but for home use.   I don’t ink ISP’s have any care to be that nice.   so they don’t.   thats why you pay for fixed IP addtesses.



all NO-IP does is change some DNS forwarding to point to your latest IP address automatically — when you have a dynamic IP address.


and for you mail server, you generally need to have a reverse pointer to your current IP address for email to be acceptable by other mail servers.


so, each time your ip address changes, you have to change your email setup.   




Doug Easterbrook
Arts Management Systems Ltd.
mailto:doug at artsman.com
http://www.artsman.com
Phone (403) 650-1978

> On April 5, 2022, at 8:48 AM, Das Goravani <goravanis at gmail.com> wrote:
> 
> 
> My mail stopped working when I moved from one state to another in the US.
> 
> Naturally I would suspect Port 25 to be closed with the new ISP connection, but it is OPEN. 
> 
> I used the Mac’s Network Utility with “Port Scan” to test 25 and it says OPEN.
> 
> I had Spectrum ISP in FL and have it now again in NC.. they say they leave all ports open also.
> 
> I have the same everything, including same router, same server, same NO-IP connection.
> 
> I then checked my port forwarding settings and they are correct. 
> 
> My MailServe program has all it’s little green lights on for the ports also.
> 
> Mail was working at my last address just days ago.
> 
> I moved, re-setup things, and it stopped working. Everything is the same, it should work.
> 
> I use NO-IP for DNS..  I do not have a fixed IP
> 
> It is supposed to work flawlessly when you move.. that’s what it’s for.
> 
> HTTP and other things seem to be working fine, forwarding and working after the move. The server serves my website and it is up and running fine, it is Goravani.com.  It is FOR Goravani.com that I want to receive mail.. on that domain.
> 
> For example I want to receive mail for 
> das at Goravani.com
> activations at Goravani.com
> 
> Can you think of anything that would do this?
> 
> I’m on Catalina and using MailServe for Catalina. (That’s the name of the mail serving program)
> 
> Mac mini Server.
> 
> Thanks for any attention you can give me,
> 
> Das Goravani
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