VOIP – Verizon, Comcast Or Third Party

Voice Over IP is has been around for a long time; however, not until internet speeds were they really a viable option for businesses. We have worked with several companies now and this is one thing we find import to consider and that is “who is your ISP?”

One of customers is with Comcast as the ISP and wants to move over to Verizon to gain the advantages of inexpensive Fiber Optic lines now available at their place of business. The issue is they have Comcast VOIP and they would have to spend a lot of time swapping over their phone system.

We would suggest you look at third-party options such a Nextiva. This will allow you the flexibility of moving between different ISPs without a lot of configuration changes.

Let us know if this helped you…

 

#550 4.4.7 QUEUE Exchange Unable To Send To Comcast

We recently had a customer get a ISP change and on the same day were moving their DNS to Godaddy.  A few weeks later they noticed a bunch of emails bouncing back with a lot of the email addresses being for Comcast. We weren’t sure if this was a Godaddy,DNS, Exchange, or ISP issue.

It turned out to be the ISP needed to a PTR (pointer record) to the IP address.

This link helped us know that the PTR record is set by the ISP.

https://community.spiceworks.com/topic/1212792-ptr-record-in-godaddy-not-working

Here are some of the other things we had tried.

  • Adding the static IP to their SPF record.
  • Adding a Reverse Zone Record in the exchange server.
  • Turned off Spam Filtering in their email account

Let us know if this helped you…