tác giả

phuong.nguyen624 posts 7 comments

Phuong Nguyen is the website owner viettechgroup.vn, phuongnguyenit.com. Phuong Nguyen is IT Pro, MCSA, MCSE, MCITP, CCNA, VCP, LPI, Cloud Services.. Senior management experts in large corporations and enterprises Bussiness.

Phuong Nguyen has more than 16 years of experience in the field of Small and Medium IT System Administration, Microsoft solutions, Cloud, Cisco Network Infrastructure Management (Router, Swicth, FIrewall ASA Cisco,..), Fortigate,.. VMware vSphere, vCenter virtualization administration,.. Major backup solutions: Veeam Backup, Veritas Backup, Net Backup,...

Mail Routing Issue ‘451 5.7.3 Cannot achieve Exchange Server authentication’

phuong.nguyen 2019/12/19 - 5:24 PM 1

ProblemWhile putting in a New Exchange 2010 server today, I test moved a mailbox to this new site, and could not get mail to flow to the Exchange 2010 server at the clients main site.451 4.4.0 Primary target IP address…

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Why do you see XXXXXXXA after EHLO and “500 #5.5.1 command not recognized” after…

phuong.nguyen 2019/12/19 - 5:10 PM 0

IntroductionThis document describes why you see "XXXXXXXA" in mailserver communication and TLS failures associated with the Cisco Email Security Appliance (ESA).Why do you see XXXXXXXA after EHLO and "500 #5.5.1 command…

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Cisco Bug: CSCsh33982 – (E)SMTP Multiple Content-Type headers check is wrong

phuong.nguyen 2019/12/19 - 4:49 PM 0

Last ModifiedSep 23, 2017Products (1)Cisco ASA 5500-X Series FirewallsKnown Affected Releases7.2(1.25) 7.2(2)Description (partial)Symptom: The SMTP inspection make checks of the header Content-Type and…

Downgrade Instructions (Demote) Active directory from the system after converting WS2008 R2 FSMO AD…

phuong.nguyen 2019/12/16 - 11:08 PM 1

Continuing Part 1 Conversion Guide WS2008 R2 FSMO AD to WS2019 (ADDS) P1. I will guide part 2.The main content in part 2 is to demote to downgrade the old DC WS 2008R2 from the system. Practical experience if you have just transferred…

Guide to Migrate WS 2008 R2 FSMO roles to WS2019-P1

phuong.nguyen 2019/12/16 - 9:56 PM 0

#---------------------------------------------------------#--CREATE BY IT SHARE NVP#--DATE: 2019-09-14#--Migrate WS2008 R2 FSMO roles AD to conversion GUIDE WS2019 (ADDS)#--Catalogues: Vmware-MCSA2019 Lab Sets…

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tác giả

phuong.nguyen624 posts 7 comments

Mail Routing Issue ‘451 5.7.3 Cannot achieve Exchange Server authentication’

Why do you see XXXXXXXA after EHLO and “500 #5.5.1 command not recognized” after…

Cisco Bug: CSCsh33982 – (E)SMTP Multiple Content-Type headers check is wrong

Downgrade Instructions (Demote) Active directory from the system after converting WS2008 R2 FSMO AD…

Guide to Migrate WS 2008 R2 FSMO roles to WS2019-P1

HOW TO INSTALL VMWARE VCENTER SERVER APPLIANCE 6.7 U3

Review Active Directory Components

GUIDE FOR UPGRADE IN PLACE WINDOWS SERVER 2008 R2 TO WINDOWS SERVER 2016/2019 Part 3

GUIDE FOR UPGRADE IN PLACE WINDOWS SERVER 2008 R2 TO WINDOWS SERVER 2016/2019 Part 2

GUIDE FOR UPGRADE IN PLACE WINDOWS SERVER 2008 R2 TO WINDOWS SERVER 2016/2019 Part 1