Sendmail on a LAN

Steven Stern subscribed-lists at
Tue Aug 17 18:22:13 UTC 2010

On 08/17/2010 12:56 PM, PaulCartwright wrote:
>    On 08/17/2010 12:36 PM, Tim wrote:
>> Dyndns, and other such things, are useful for giving yourself a hostname
>> that you can control, to a static IP.  But aren't going to be much good
>> if you have a dynamic IP.  Private webserving's easy enough with a
>> varying IP, mail serving's another matter.
> You can update dyndns every month even if your ip changes. MY IP lease 
> used to last a month.. YMMV
> I decided to go the extra mile & $5 a month & get a static IP..
Every month?  I use ddclient to check the router's external IP every 6
minutes. If it changes, I update DYNDNS.  (I have a "custom zone" so
DYNDNS handles the DNS for  Before I switched to Google
for my domain mail, I used to run a mail server here -- before Comcast
blocked incoming and outgong traffic on port 25.  FYI, DYNDNS offers a
service called "mail-hop" that will act as your MX server, taking mail
on port 25 and sending it to your internal server on whatever port you

-- Steve

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