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Jeff Guillet
Works at ExtraTeam
Attended Savanna High School
Lives in Pacifica, CA
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Jeff Guillet

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Turn Exchange Anonymous Relay On or Off with Toggle-ExternalRelayReceiveConnectors.ps1
Toggle-ExternalRelayReceiveConnectors.ps1 I wrote this PowerShell script to make it easy to identify and toggle anonymous relay rights on any of your organization's front-end Receive Connectors. Most organizations require SMTP relays to internal and externa...
Toggle-ExternalRelayReceiveConnectors.ps1 I wrote this PowerShell script to make it easy to identify and toggle anonymous relay rights on any of your organization's front-end Receive Connectors. Most organizations require SMT...
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Jeff Guillet

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Chrome Browser Now Warns About Weak SHA-1 Certificates
* ACTION REQUIRED * The Google Chrome web browser is now warning users if Outlook on the web (OWA) or other websites are using SHA-1 SSL certificates. These certificates are no longer considered secure and should be replaced ASAP. Please read my article...
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Jeff Guillet

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Don't Delete the Default MRM Policy
I was troubleshooting an issue with an Exchange 2013 customer where their "Default Archive and Retention Policy" was not being automatically applied to archive-enabled mailboxes. Admins could manually apply the policy, but they wanted it applied automatical...
I was troubleshooting an issue with an Exchange 2013 customer where their "Default Archive and Retention Policy" was not being automatically applied to archive-enabled mailboxes. Admins could manually apply the policy, but th...
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Jeff Guillet

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Set-AutodiscoverSCP.ps1 script is now on the TechNet Gallery
How many times have you installed a new Exchange 2010-2016 server only to hear users complain about a security pop-up in Outlook referencing the new server? This happens because Exchange setup uses the FQDN of the server as the service connection point (SCP...
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Jeff Guillet

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Fix for MSExchange Unified Messaging Event ID 1423 "A TLS API failure occurred. Error = 0x80090331"
I was working with a customer who is implementing Unified Messaging in an Exchange 2013 CU7 environment with Lync 2013. All Exchange servers are running on Windows Server 2012 R2. Exchange UM was configured properly, including setting the Unified Messaging ...
I was working with a customer who is implementing Unified Messaging in an Exchange 2013 CU7 environment with Lync 2013. All Exchange servers are running on Windows Server 2012 R2. Exchange UM was configured properly, includin...
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Either way, it's OWA
<rant> Way to kill off a well-known brand. According to this article on the Office Blog, Microsoft marketing has decided to rename the well known Outlook Web App (OWA) to Outlook on the web (Ootw). Note the small "w" in web - don't want to be accused of mak...
<rant> Way to kill off a well-known brand. According to this article on the Office Blog, Microsoft marketing has decided to rename the well known Outlook Web App (OWA) to Outlook on the web (Ootw). Note the small "w" in web...
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Jeff Guillet

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How to Remove Mailbox Auto-Mapping in Outlook
Exchange 2010 Service Pack 1 (SP1) and later and Office 365 include a feature that allows Outlook clients to automatically map to any mailbox to which a user has Full Access permissions. If a user is granted Full Access permissions to another user's mailbox...
Exchange 2010 Service Pack 1 (SP1) and later and Office 365 include a feature that allows Outlook clients to automatically map to any mailbox to which a user has Full Access permissions. If a user is granted Full Access permi...
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2015 Exchange Oscars
I'm honored to have be awarded the award for "Best at Knowledge Sharing" earlier this month at the 2015 MVP Global Summit in Redmond, WA. Netmail and Binary Tree generously sponsored the second  Exchange Oscars party at the Tavern Hall in Bellevue, WA. This...
I'm honored to have be awarded the award for "Best at Knowledge Sharing" earlier this month at the 2015 MVP Global Summit in Redmond, WA. Netmail and Binary Tree generously sponsored the second Exchange Oscars party at the Ta...
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Jeff Guillet

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Enabling Kerberos Authentication in a Mixed Exchange 2013 / 2016 Environment
Recently, the Exchange Team published an article, " Exchange 2016 Coexistence with Kerberos Authentication " explaining how to enable Kerberos authentication in a mixed environment. Using Kerberos authentication for Exchange is a best practice and is part o...
Recently, the Exchange Team published an article, "Exchange 2016 Coexistence with Kerberos Authentication" explaining how to enable Kerberos authentication in a mixed environment. Using Kerberos authentication for Exchange is...
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Second Edition of Office 365 for Exchange Professionals
I am very pleased to announce that the second edition of Office 365 for Exchange Professionals will be released next week at the IT/Dev Connections conference in Las Vegas, where all four of us will be speaking. This self-published eBook is the most compreh...
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Hello Jeff, can I ask you one thing? Do you have any idea how to auto start one application after window logon in Windows Server 2008 r2 domain member? I tried to put inside "startup" and also create "task" but doesn't work.Thanks.
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Exchange 2013 Migration Batch Completes Successfully, But Mailbox is Not Moved
Here's another weird one. I'm testing a mailbox move from Exchange 2013 to Exchange 2016 (beta) for a mailbox with an in-place archive. I can create a new migration batch for the user and it completes in short order, but the mailbox and archive are not move...
Here's another weird one. I'm testing a mailbox move from Exchange 2013 to Exchange 2016 (beta) for a mailbox with an in-place archive. I can create a new migration batch for the user and it completes in short order, but the ...
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Fix for Server Manager Error: "Online - Cannot get performance counter data"
One of the interesting things about having a home lab is you get to break things in ways that no one thought possible. I'll give a nickle to the next person who has this happen to them. I have three Exchange servers running Windows Server 2012 R2. Performan...
One of the interesting things about having a home lab is you get to break things in ways that no one thought possible. I'll give a nickle to the next person who has this happen to them. I have three Exchange servers running W...
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People
Have him in circles
262 people
Tuyen Dang's profile photo
Gareth Gudger's profile photo
Praveenraj Thangaraj's profile photo
Wasiliy Trifonov's profile photo
Joe Berardelli's profile photo
Paul Cunningham's profile photo
Marin Babačić's profile photo
Bryan Sutton's profile photo
Yaniv Totshvili's profile photo
Work
Occupation
Principal Systems Architect
Skills
Exchange Server, Windows Server, Active Directory, Lync Server, Office 365
Employment
  • ExtraTeam
    Principal Systems Architect, 10 - present
  • Convergent Computing
    Sr. Consultant, 11 - 10
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Pacifica, CA
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Tagline
Exchange MCSM & MVP, Author, and Blogger
Introduction
Microsoft Certified Solutions Master and Exchange MVP, and Principal Systems Architect for ExtraTeam (SPS), a Microsoft Gold Partner in Pleasanton, CA. I hold multiple certifications including MCITP:Enterprise Administrator and MCITP:Enterprise Messaging Administrator, MCSE:Messaging and CISSP.
 
I am the author of The EXPTA {blog}, as well as a published author, contributing writer, and technical editor for more than a dozen technical books and other publications.

I work primarily with Microsoft products (Exchange Server, Active Directory, Office 365, etc.). I also work with various other platforms and products, usually in the form of migrations. 

Microsoft is not a "religion" for me. They simply provide the best products, in my opinion, and I like to work with the best.
Bragging rights
One of less than five Microsoft Certified Masters and MVPs for Exchange in North America!
Education
  • Savanna High School
    1989 - 1991
  • UC Berkeley Extension
    1999 - 2000
Basic Information
Gender
Male
Jeff Guillet's +1's are the things they like, agree with, or want to recommend.
Multi Organization O365 migrations - SMTP routing and Criteria Based Rou...
blog.chrislehr.com

When migrating three disparate email organizations into a single Office 365 tenant, one of the major hurdles in this was ensuring that once

Making the Case for Documentation
www.expta.com

The Clouds are moving fast and it's sometimes difficult to catch up with changes in functionality and new features. Customers rely on accura

Talking Exchange Server with Microsoft's Perry Clarke | Tony Redmond's E...
windowsitpro.com

I sat down with Perry Clarke, the Microsoft development supremo for the on-premises and cloud versions of Exchange Server. What Perry had to

End Piracy, Not Liberty – Google
www.google.com

Millions of Americans oppose SOPA and PIPA because these bills would censor the Internet and slow economic growth in the U.S.. Two bills bef

New Orleans, LA hotels near the Superdome | New Orleans Homewood Suites
www.homewoodsuitesneworleans.com

Welcome to the New Orleans Homewood Suites. We are close to the Superdome, the French Quarter and many other New Orleans attractions.

The EXPTA {blog}: Blistering Fast Windows Server - Parts List and Video!
www.expta.com

My Photo. Jeff: Pacifica, CA, United States: Microsoft Exchange MCM and MVP. I work as a senior consultant for ExtraTeam, a Microsoft Gold P

Entertainment Consumers Association (ECA)
action.theeca.com

Video gamers&#39; Community &amp; Gaming Consumer Advocate: Entertainment Consumers Association (ECA). A grass roots community created to se

The EXPTA {blog}: Issue with IE9 and the Exchange 2010 Management Console
www.expta.com

About Me. My Photo. Jeff: Pacifica, CA, United States; Microsoft MVP and Consultant for ExtraTeam, a Microsoft Gold Partner in Pleasanton, C

Can't believe this is right in my backyard. Great sunsets and views.
Public - 11 months ago
reviewed 11 months ago
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