VBA CODE to Verify Email Address Found in Outlook Global Address List

Problem Description

To remove Inactive (non existing )email accounts not found in global address list before send email to list of available outlook email accounts in excel

Solution

Run sql Query to fetch Username or User Email id from Database

Step 1 :

Query 1 :

strSQL = "select distinct [User Email ID]  from dbo.vw_EmailRecipients_AT where Report_Catalog_ID in (" & rptid & ")"

or

Query 2 :

strSQL = "select distinct [User Name]  from dbo.vw_EmailRecipients_AT where Report_Catalog_ID in (" & rptid & ")"

Step 2 :

Call the Module to Copy retrieve Result Set to Excel Sheet

Sub Testemail()
    Dim rEmails As Range
    Dim rEmail As Range
    Dim oOL As Object

    Set oOL = CreateObject("Outlook.Application")
    Set rEmails = ThisWorkbook.Sheets("Report_Users").Range("A2:A" & Range("A65000").End(xlUp).Row)

    For Each rEmail In rEmails
        rEmail.Offset(, 1) = ResolveDisplayNameToSMTP(rEmail.Value, oOL)
    Next rEmail

End Sub

Step 3 :

Resolve Display Name

Public Function ResolveDisplayNameToSMTP(sFromName, OLApp As Object) As String

    Dim oRecip As Object 'Outlook.Recipient
    Dim oEU As Object 'Outlook.ExchangeUser
    Dim oEDL As Object 'Outlook.ExchangeDistributionList

    Set oRecip = OLApp.Session.CreateRecipient(sFromName)
    oRecip.Resolve
    If oRecip.Resolved Then
        ResolveDisplayNameToSMTP = "Valid"
    Else
        ResolveDisplayNameToSMTP = "Not Valid"
    End If
End Function

Bug 1: If I Use Query 1 : The resultset will be abcdef@company.com where all the email id will be valid - WRONG_RESULT.

Bug 2: If I Use Query 2 : The resultset will be combination of UserName like Rajan jha(rjhan) and contract employees will be Rajan jha (rjhan - Compnay1 is at Compnay2)

In this result the output with Rajanjha(rjahan), if the email account is found in GAL it will valid and if not found it will be Invalid email.For resultset like Rajan jha (rjhan - Compnay1 is at Compnay2) where even email account exist in GAL it result as invalid.

please guide me through to solve this problem