You can generate custom domain email & just have it forward to your gmail account. You can also set up to reply back from that address (https://support.google.com/domains/answer/3251241?hl=en)
The service also includes DDNS for your subdomain. You can set this up quickly if you have DDclient (https://support.google.com/domains/answer/6147083?hl=en) but I used this as an excuse to sit down and really dig into learning Python.
This still needs lots of work but it is functional for now. Just run it manually & check your error prints in console before setting this loose as a cron job/scheduled task. You don't want to be blocked because you kept sending invalid requests.
# Dynamic DNS Python script
# Author: Chris Stokes-Pham
# v1.0 7/28/15
# The legal stuff:
# The MIT License (MIT)
# Copyright (c) [2015] [Christopher Andrew Stokes-Pham]
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# libraries we need
import urllib.request
import urllib.parse
import http.client
import base64
import socket
#------------------------------
# all the user specific var
# define google username & password for DDNS service
myUname = 'Google Dynamic DNS generated username here'
myPasswd = 'Google Dynamic DNS generated password here'
# define your subdomain to update
myDomain = 'yourSubDomain.YourDomain.YourTLD'
#------------------------------
# Determine our current external IPs
# use https://domains.google.com/checkip http server to obtain public IP, Google will return IPv6 so
# other good server is http://ip.42.pl/raw which returns IPv4
url4 = 'http://ip.42.pl/raw'
req4 = urllib.request.Request(url4)
resp4 = urllib.request.urlopen(req4)
respData4 = resp4.read()
extIP4 = respData4.decode('utf-8')
url6 = 'https://domains.google.com/checkip'
req6 = urllib.request.Request(url6)
resp6 = urllib.request.urlopen(req6)
respData6 = resp6.read()
extIP6 = respData6.decode('utf-8')
#print IPs to console for troubleshooting
print (extIP4)
print (extIP6)
#------------------------------
# Check current subdomain IP, if matches don't overwork Google's DNS server
currentIP = socket.gethostbyname(myDomain)
if currentIP != extIP4:
# connect to Google DDNS to update IP
# Google example syntax per https://support.google.com/domains/answer/6147083
# https://username:password@domains.google.com/nic/update?hostname=subdomain.yourdomain.com&myip=1.2.3.4
# base64 encode username & password
myUsrPass = myUname + ":" + myPasswd
myUsrPass = base64.b64encode(bytes(myUsrPass, 'utf-8')).decode("ascii")
print (myUsrPass)
# encode data & user agent
# Google DDNS only supports IPv4 for now so we will us it
myData = urllib.parse.urlencode({'hostname' : myDomain, 'myip' : extIP4 }).encode("UTF-8")
upUrl= '/nic/update?'
upHost = 'domains.google.com'
# URL query example & Headers
# POST /nic/update?hostname=subdomain.yourdomain.com&myip=1.2.3.4 HTTP/1.1
# Host: domains.google.com
# Authorization: Basic base64-encoded-auth-string User-Agent: Chrome/41.0 your_email@yourdomain.com
headers = {
'Content-Type' : "application/x-www-form-urlencoded",
'User-Agent' : 'Chrome/41.0',
'Authorization' : 'Basic %s' % myUsrPass
}
# connect & update (need to include some catch for errors later)
conn = http.client.HTTPSConnection(upHost)
conn.request("POST", upUrl, myData, headers)
upResp = conn.getresponse()
print(upResp.status, upResp.reason)
print(upResp.read().decode('utf-8'))
else:
print("Current DNS shows your IP " + extIP4 + " no need to bother Google DNS")
# Author: Chris Stokes-Pham
# v1.0 7/28/15
# The legal stuff:
# The MIT License (MIT)
# Copyright (c) [2015] [Christopher Andrew Stokes-Pham]
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# libraries we need
import urllib.request
import urllib.parse
import http.client
import base64
import socket
#------------------------------
# all the user specific var
# define google username & password for DDNS service
myUname = 'Google Dynamic DNS generated username here'
myPasswd = 'Google Dynamic DNS generated password here'
# define your subdomain to update
myDomain = 'yourSubDomain.YourDomain.YourTLD'
#------------------------------
# Determine our current external IPs
# use https://domains.google.com/checkip http server to obtain public IP, Google will return IPv6 so
# other good server is http://ip.42.pl/raw which returns IPv4
url4 = 'http://ip.42.pl/raw'
req4 = urllib.request.Request(url4)
resp4 = urllib.request.urlopen(req4)
respData4 = resp4.read()
extIP4 = respData4.decode('utf-8')
url6 = 'https://domains.google.com/checkip'
req6 = urllib.request.Request(url6)
resp6 = urllib.request.urlopen(req6)
respData6 = resp6.read()
extIP6 = respData6.decode('utf-8')
#print IPs to console for troubleshooting
print (extIP4)
print (extIP6)
#------------------------------
# Check current subdomain IP, if matches don't overwork Google's DNS server
currentIP = socket.gethostbyname(myDomain)
if currentIP != extIP4:
# connect to Google DDNS to update IP
# Google example syntax per https://support.google.com/domains/answer/6147083
# https://username:password@domains.google.com/nic/update?hostname=subdomain.yourdomain.com&myip=1.2.3.4
# base64 encode username & password
myUsrPass = myUname + ":" + myPasswd
myUsrPass = base64.b64encode(bytes(myUsrPass, 'utf-8')).decode("ascii")
print (myUsrPass)
# encode data & user agent
# Google DDNS only supports IPv4 for now so we will us it
myData = urllib.parse.urlencode({'hostname' : myDomain, 'myip' : extIP4 }).encode("UTF-8")
upUrl= '/nic/update?'
upHost = 'domains.google.com'
# URL query example & Headers
# POST /nic/update?hostname=subdomain.yourdomain.com&myip=1.2.3.4 HTTP/1.1
# Host: domains.google.com
# Authorization: Basic base64-encoded-auth-string User-Agent: Chrome/41.0 your_email@yourdomain.com
headers = {
'Content-Type' : "application/x-www-form-urlencoded",
'User-Agent' : 'Chrome/41.0',
'Authorization' : 'Basic %s' % myUsrPass
}
# connect & update (need to include some catch for errors later)
conn = http.client.HTTPSConnection(upHost)
conn.request("POST", upUrl, myData, headers)
upResp = conn.getresponse()
print(upResp.status, upResp.reason)
print(upResp.read().decode('utf-8'))
else:
print("Current DNS shows your IP " + extIP4 + " no need to bother Google DNS")
