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Posted 21 Apr 2003

SMTP and POP3 Mail Server

, 29 Sep 2003
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An SMTP and POP3 mail server written using the .NET Framework and C#.

Sample Image - smtppop3mailserver.jpg


The MailServerComponent implements POP3 and SMTP (core) servers. It Handles lowlevel POP3 and SMTP commands and raises events according to it. The MailServer service just handles MailServerComponent events and does mail retrieving and storing job.



  • SMTP/POP3/IMAP4/WebMail
  • IP access filtering
  • User mailbox size limit
  • Supports XML or MSSQL databases
  • Nice GUI for administation
  • Well commented source code included


  • All basic SMTP features  
  • Supports multiple domains  
  • Supports multiple e-address for one mailbox  
  • Supports aliases(Mailing lists). Supports public and private(needs authentication) lists.
  • Supports email routing. eg *ivar* pattern routes all addresses containing ivar to specified mailbox or remote address  
  • SMTP AUTH (LOGIN CRAM-MD5) (supported authentication types)  
  • SMTP custom message filters  
  • Relay can be controlled by IP access or authentication


  • All basic POP3 features
  • APOP command for secure authentication
  • POP3 AUTH (LOGIN CRAM-MD5) (supported authentication types)
  • POP3 remote accounts

WebMail (ASP.NET):

  • Standalone webmail, can be used any with IMAP based mailserver
  • Supports XML or MSSQL databases
  • Multiple UI languages (ENG,EST,RUS)



This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here


About the Author

Ivar Lumi
Estonia Estonia
No Biography provided

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Comments and Discussions

GeneralRe: Timeout while receiving message Pin
Ivar Lumi1-Mar-11 4:40
memberIvar Lumi1-Mar-11 4:40 
GeneralRe: Timeout while receiving message Pin
robertbindas1-Mar-11 5:25
memberrobertbindas1-Mar-11 5:25 
GeneralRe: Timeout while receiving message Pin
robertbindas2-Mar-11 3:37
memberrobertbindas2-Mar-11 3:37 
GeneralRe: Timeout while receiving message Pin
Ivar Lumi2-Mar-11 3:44
memberIvar Lumi2-Mar-11 3:44 
You should have another problem. Settings MaxConnections is not solution.
I run this smtp component live on few servers, so far all work ok, alowing many connections(limited to 200) at time.
GeneralRe: Timeout while receiving message Pin
Ivar Lumi3-Mar-11 21:11
memberIvar Lumi3-Mar-11 21:11 
GeneralRe: Timeout while receiving message Pin
Loves00720-Feb-14 7:47
memberLoves00720-Feb-14 7:47 
Generalemail server configration Pin
zzzfirst11130-Dec-10 11:43
memberzzzfirst11130-Dec-10 11:43 
GeneralRe: email server configration Pin
Ivar Lumi30-Dec-10 21:00
memberIvar Lumi30-Dec-10 21:00 
GeneralMy vote of 5 Pin
mohanudupa2-Nov-10 22:26
membermohanudupa2-Nov-10 22:26 
Generaln Pin
wadeaa18-May-10 11:33
memberwadeaa18-May-10 11:33 

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