Lync, Add additional SIP domains to an already deployed Environment


March 6, 2013 by UCSip

I have been asked this question many times so I felt it was time to document it so others could benefit, this process is becoming more common as Lync gains traction in the marketplace.

While it’s quite common and a best practice to match the Primary SMTP domain of your users and SIP domain, this isn’t always feasible for 100% of companies. IF you find yourself in a situation where you must support multiple SIP domains, though I would seriously advise you consider the¬†administration¬†complexities of doing this, the following explains how to perform this.

1. Add the new SIP domain(s) to the Topology.

2. Create DNS records for the new simple URLs, both internal and external.

  • (external and internal)
  • (external and internal)
  • SRV 5061-> (internal)
  • SRV 443-> (external)
  • SRV 5061-> (external)

3. Request new certificates for the following:

  • Front End Server Certificate (internal)
    • don’t forget your load balancer if you’re doing SSL offloading
  • Edge Server Certificate (external)
  • Reverse Proxy Certificate (external)

4. Run Enable-CSComputer on each pool member and director Server. This will re-configure IIS to accept the new simple URLs.

4 thoughts on “Lync, Add additional SIP domains to an already deployed Environment

  1. I’m excited to discover this website. I need to to
    thank you for ones time for this particularly wonderful read!!
    I definitely liked every little bit of it and I have you book-marked to
    check out new information on your blog.

  2. Everyone loves what you guys are up too. This sort of clever work and exposure!
    Keep up the wonderful works guys I’ve included you guys to my

  3. imagehoster says:

    I’ve been browsing online more than 4 hours today, yet I never found any interesting article like
    yours. It is pretty worth enough for me.
    In my opinion, if all site owners and bloggers made good content as you
    did, the internet will be a lot more useful than ever before.

  4. Brian says:

    Can you elaborate some more on this statement “seriously advise you consider the administration complexities of doing this”

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

<span>%d</span> bloggers like this: