Sunday, September 24, 2017

Skype4B crashes , when attemping to reply to notifications.



Recently, we found out Skype for business start crashing with the symptom explained below. After working around the issue, we figured it out the issue is caused by recently installed security update



Issue :  When user clicks on the notification message at the bottom right screen , Skype4B closes entirely. When user opens Skype4B and initiates IM to another user it works.


Cause : Recently installed “Security update for Skype for business KB4011040”



https://www.microsoft.com/en-us/download/details.aspx?id=55944



Image result for Skype4b




Oz Casey, Dedeal
Systems Engineer
http://smtp25.blogspot.com/ (Blog)
http://telnet25.wordpress.com/ (Blog)
https://twitter.com/Message_Talk (Twitter)

Saturday, August 19, 2017

How to use Power-Shell to Perform SMTP Relay Test


In most cases, when application owner claiming, e-mails aren’t relayed through the existing internal application relay front end, you will need to perform few basic troubleshooting steps. Bear in mind asking basic questions up front will make your job easier.


What is the IP address of your application?
What platform your application is running from? (In this scenario we will assume the application is installed
on Windows Serer.

What is the host name ( FQDN) or IP address your application is configured to relay through
Do you have any logs on your application showing SMTP handshake (you are asking TCP/IP handshake).
Most   cases you won’t get this detailed information

If telnet service is installed you can sent e-mail from command line and observe the response. If SMTP relay
Front end accepting e-mails, you will need to figure it out what is happening on the transport and delivery
layers.

Here is simple PS code can be used to simplify the test from Application Server. You will need to change few variables to make this cod work in your environment

$smtpServer = "relay.smtp25.org"
$smtpFrom   = "smtp_relay@.smtp25.org "
$smtpTo     = "casey.dedeal@.smtp25.org "


clear-host

#()Variables
$subject    = "Testing SMTP Relay"
$body       = "smtp relay testing"
$smtpServer = "relay.smtp25.org"
$smtpFrom   = "smtp_relay@.smtp25.org "
$smtpTo     = "casey.dedeal@.smtp25.org "

#()Message
$Computer = $env:computername
$message  = " sent from "

#()Subject body
$messageSubject = $subject
$messageBody = $body + $message + $Computer

#()Sending
$smtp = New-Object Net.Mail.SmtpClient($smtpServer)
$smtp.Send($smtpFrom,$smtpTo,$messagesubject,$messagebody)




Oz Casey, Dedeal
Systems Engineer
http://smtp25.blogspot.com/ (Blog)
http://telnet25.wordpress.com/ (Blog)
https://twitter.com/Message_Talk (Twitter)

Saturday, August 12, 2017


PowerShell Check if Server is alive

Use the script below to check if a server is alive # replace the server name to make it fit into your needs.

$server = “dc1.smtp25.org”

If (Test-Connection $server -count 1 -quiet) {
  Write-host  “The $server responded” -f yellow
}
else{

Write-host  “No connection to $server -f red
  Write-host “Script will stop” -f red
   Break
}



Oz Casey, Dedeal
Systems Engineer
http://smtp25.blogspot.com/ (Blog)
http://telnet25.wordpress.com/ (Blog)
https://twitter.com/Message_Talk (Twitter)


Thursday, August 10, 2017




Using PowerShell Test-Connection


#(1)_.Check if  Machine is responding

Clear-host
Write-host $null
#(a)_Capture Server name
$server = Read-host “_Provide Server Name to Test”

#(b)_. Test Connection
If (Test-Connection $server -count 1 -quiet) {
  Write-host "The $server responded" -f yellow
}
else{

Write-host  "No connection to $server" -f red
  Write-host "Script will stop" -f red
   Break;
}



Oz Casey, Dedeal
Systems Engineer
http://smtp25.blogspot.com/ (Blog)
http://telnet25.wordpress.com/ (Blog)
https://twitter.com/Message_Talk (Twitter)