DMARC

Amazonon DMARC (http://sesblog.amazon.com/post/Tx22ZELXSSZRYZR/What-is-DMARC-and-should-you-use-it). This Google article is also helpful: https://support.google.com/a/answer/2466563?hl=en If you scroll down to the ‘Example records’ section, you’ll see a number of examples on how to write the TXT record. Here’s an example of that record: _dmarc.advancedmediawebs.com. 3600 IN TXT “v=DMARC1; p=quarantine; pct=5; rua=mailto:mark@domain.com”

DNS open resolver test

# dig +short test.openresolver.com TXT @1.1.1.1 (IP of the server) Other Information Test your server for an open DNS resolver here: http://openresolver.com/ Closing DNS Resolvers on Windows Server 2003/2008/2008 R2: http://technet.microsoft.com/en-us/library/cc787602(v=ws.10).aspx Windows Servers running Plesk: http://kb.parallels.com/en/116463 Closing DNS Resolvers on Servers running Bind: http://www.zytrax.com/books/dns/ch9/close.html

Posted in DNS

Disabling Recursive DNS in the Plesk Panel and No Panels

To Disable Recursive DNS in the Parallels Plesk Panel Log in to the Parallels Plesk Panel as administrator. Click Tools & Settings. From the General Settings area, click DNS Template Settings. Click DNS Recursion.Select Localnets, and then click Ok. For Windows Servers: Log in to your ¬†Server ¬†through a RemoteRead More…

Cannot Contact Outlook.com

Mail for some reason is not delivering to outlook.com Find your namservers. #cat /etc/resolv.conf nameserver 69.xx.xx.xx nameserver 69.xx.xx.xx – in this case the example is 69.xx.xx.xx $ dig MX outlook.com @69.xx.xx.xx ; <<>> DiG 9.9.2-P2-RedHat-9.9.2-3.P2.el5 <<>> MX outlook.com @69.64.66.11 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY,Read More…

Posted in DNS

DNS server fails to start in plesk

Starting the DNS server fails. restarting named shows the following error: service named restart Stopping named: [ OK ] Starting named: Error in named configuration: zone 0.0.127.IN-ADDR.ARPA/IN: loaded serial 20010622 zone domain1.com/IN: loaded serial 1415397236 zone domain2.org/IN: loaded serial 1415411359 zone domain3.com/IN: loaded serial 1415556389 Thats the okay part AndRead More…