Returns SharePoint smtp server

getsmtpServer.ps1

/// 
/// Returns SharePoint smtp server 
/// 
/// 
private string GetSmtpServer() 
{ 
SPWebApplicationCollection spWebApplicationCollection = SPWebService.ContentService.WebApplications; 
SPOutboundMailServiceInstance smtpServer = new SPOutboundMailServiceInstance();

if (spWebApplicationCollection != null) 
{ 
foreach (SPWebApplication spWebApplication in spWebApplicationCollection) { 
smtpServer = spWebApplication.OutboundMailServiceInstance; 
return smtpServer.Server.Address; 
} 
} 
return string.Empty; 
}