Need help with Regex Filter

Question

Need help on a regex filter for replacing the text/string
e.g

******@support.domain.com should be replaced with support@keyman .com
******@support.domain.com should be replaced with sales@keyman .com
******@support.domain.com should be replaced with info@keyman .com

I am looking for a single regex filter to achieve. Basically this will be used as a transport rule on email server for rewriting the email address. Can someone help with exact regex filter.

Answer 1

Regex is _emp\d{3}@support.
if you program with C#,sample code is :

System.Text.RegularExpressions.Regex reg = new System.Text.RegularExpressions.Regex("_emp\d{3}@support\.", System.Text.RegularExpressions.RegexOptions.IgnoreCase);

string inpstr = Console.ReadLine();

if (reg.Match(inpstr).Success)
{
string outstr = reg.Replace(inpstr, "@");
}

Answer 2

Hi @vprasad84

It is supported to use regex in mail flow rules.
However, there isn't any option to rewrite the email address by using mail flow rules.

The available conditions and actions are listed in this link: Mail flow rule conditions and exceptions (predicates) in Exchange Server

To rewrite the email address, you may need an Edge transport server to use the Address rewrite feature.

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