how to use proxy in outlook2019(set proxy for a single application)

1. testing

   • enable connection tab with lgp, but failed.

   • proxifier on command line, also failed except proxifier gui.

   • using pac file.

2. result

   • crate a pac file, for examples:

     from cisco:

     function FindProxyForURL(url, host)
     {
     if (shExpMatch(host, "*.live.com"))
     return "SOCKS chenshi.de:1080";
     else if (shExpMatch(host, "*.microsoft.com"))
     return "SOCKS chenshi.de:1080";
     else if (shExpMatch(host, "*.office365.com"))
     return "SOCKS chenshi.de:1080";
     else if (shExpMatch(host, "*.office.com"))
     return "SOCKS chenshi.de:1080";
     else if (shExpMatch(host, "*.microsoftonline.com"))
     return "SOCKS chenshi.de:1080";
     else if (shExpMatch(host, "*.msocdn.com"))
     return "SOCKS chenshi.de:1080";
     else if (shExpMatch(host, "*.msftauth.net"))
     return "SOCKS chenshi.de:1080";
     else if (shExpMatch(host, "*.msauth.net"))
     return "SOCKS chenshi.de:1080";
     else
     return "DIRECT";
     }
     

     recommanded:

     function FindProxyForURL(url, host)
      {
      if (shExpMatch(host, "*.live.com") ||
      shExpMatch(host, "*.microsoft.com") ||
      shExpMatch(host, "*.office365.com") ||
      shExpMatch(host, "*.office.com") ||
      shExpMatch(host, "*.microsoftonline.com") ||
      shExpMatch(host, "*.msocdn.com") ||
      shExpMatch(host, "*.msftauth.net") ||
      shExpMatch(host, "*.msauth.net"))
      return "SOCKS chenshi.de:1080";
      else
      return "DIRECT";
      }
     

     not recommended:

     function FindProxyForURL(url, host)
      {
      if (shExpMatch(host, "(*.live.com|*.microsoft.com|*.office365.com|*.office.com|*.microsoftonline.com|*.msocdn.com|*.msftauth.net|*.msauth.net)"))
      return "SOCKS chenshi.de:1080";
      else
      return "DIRECT";
      }
     

     from v2ray, I like it:

     var V2Ray = “SOCKS5 chenshi.de:1080; SOCKS chenshi.de:1080; DIRECT;";
     var domains = [
     "live.com",
     "microsoft.com",
     "office365.com",
     "office.com",
     "microsoftonline.com",
     "msocdn.com",
     "msftauth.net",
     "msauth.net",
     ];
     function FindProxyForURL(url, host) {
         for (var i = domains.length - 1; i >= 0; i--) {
             if (dnsDomainIs(host, domains[i])) {
                 return V2Ray;
             }
         }
         return "DIRECT";
     }
     

   • set proxy with powershell:

     Function set-windowsAcs
     {
         Param
         (
             [string]$acs
         )
         Begin
         {
             $regKey="HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings"
         }
     
         Process
         {
             if ((Get-ItemProperty $regKey).PSObject.Properties.Name -contains "AutoConfigURL" -eq $true)
             {
             Remove-ItemProperty -path $regKey -Name AutoConfigURL
             }
             Set-ItemProperty -path $regKey -Name AutoConfigURL -Value $acs
         }
     
         End
         {
             Write-Output "pac is enabled"
         }
     }
     set-windowsAcs -acs https://chenshi.de/chenshi.pac
     

3. references:

   https://findproxyforurl.com/example-pac-file/

   https://www.cisco.com/c/en/us/support/docs/security/web-security-appliance/118076-configure-wsa-00.html