/// <summary>
/// Raises <b>RcptTo</b> event.
/// </summary>
/// <param name="to">RCPT TO: value.</param>
/// <param name="reply">Default SMTP server reply.</param>
/// <returns>Returns SMTP server reply what must be sent to the connected client.</returns>
private SMTP_Reply OnRcptTo(SMTP_RcptTo to,SMTP_Reply reply)
{
if(this.RcptTo != null){
SMTP_e_RcptTo eArgs = new SMTP_e_RcptTo(this,to,reply);
this.RcptTo(this,eArgs);
return eArgs.Reply;
}
return reply;
}
/// <summary>
/// Is called when SMTP server session gets RCPT command.
/// </summary>
/// <param name="sender">Sender.</param>
/// <param name="e">Event data.</param>
private void m_pSmtpServer_Session_RcptTo(object sender,SMTP_e_RcptTo e)
{
try{
string mailTo = e.RcptTo.Mailbox;
// If domain isn't specified, add default domain
if(mailTo.IndexOf("@") == -1){
mailTo += "@" + m_SMTP_DefaultDomain;
}
//1) is local domain or relay needed
//2) can map email address to mailbox
//3) is alias
//4) if matches any routing pattern
// check if e-domain is local
if(m_pApi.DomainExists(mailTo)){
string user = m_pApi.MapUser(mailTo);
if(user == null){
e.Reply = new SMTP_Reply(550,"No such user here.");
// Check if mailing list.
if(m_pApi.MailingListExists(mailTo)){
// Not authenticated, see is anyone access allowed
if(!e.Session.IsAuthenticated){
if(m_pApi.CanAccessMailingList(mailTo,"anyone")){
e.Reply = new SMTP_Reply(250,"OK.");
}
}
// Authenticated, see if user has access granted
else{
if(m_pApi.CanAccessMailingList(mailTo,e.Session.AuthenticatedUserIdentity.Name)){
e.Reply = new SMTP_Reply(250,"OK.");
}
}
}
// At last check if matches any routing pattern.
else{
DataView dv = m_pApi.GetRoutes();
foreach(DataRowView drV in dv){
// We have matching route
if(Convert.ToBoolean(drV["Enabled"]) && SCore.IsAstericMatch(drV["Pattern"].ToString(),mailTo)){
e.Reply = new SMTP_Reply(250,"OK.");
break;
}
}
}
}
else{
// Validate mailbox size
if(m_pApi.ValidateMailboxSize(user)){
e.Reply = new SMTP_Reply(552,"Requested mail action aborted: Mailbox <" + e.RcptTo.Mailbox + "> is full.");
}
else{
e.Reply = new SMTP_Reply(250,"OK.");
}
}
}
// Foreign recipient.
else{
e.Reply = new SMTP_Reply(550,"Relay not allowed.");
// This isn't domain what we want.
// 1)If user Authenticated, check if relay is allowed for this user.
// 2)Check if relay is allowed for this ip.
if(e.Session.IsAuthenticated){
if(IsRelayAllowed(e.Session.AuthenticatedUserIdentity.Name,e.Session.RemoteEndPoint.Address)){
e.Reply = new SMTP_Reply(250,"User not local will relay.");
}
}
else if(IsRelayAllowed("",e.Session.RemoteEndPoint.Address)){
e.Reply = new SMTP_Reply(250,"User not local will relay.");
}
}
}
catch(Exception x){
e.Reply = new SMTP_Reply(500,"Internal server error.");
Error.DumpError(this.Name,x,new System.Diagnostics.StackTrace());
}
}