Hi All I have very strange problem in Exchange server. I have exchange 2000 server on windows 2000 domain (same machine) behind ISA Server 2004. I also have Popcon (mail downloader) on exchange machine to download mails. This configuration worked perfect. I had been using it for the last six months without problems. But since today morning it started giving problem. I can't send/ receive mails not even internally. Pop con downloads mails and forwards to exchange but nobody receives in outlook (where does it go) I noticed that in MDBDATA folder there are several .stf files. I tried to access exchange internally thru outlook pop I got older mails only. No new mails. Form outlook sent mails to myself but never received it. What could be wrong with the server? I tried following * Repaired ebd file * Reinstalled SMTP * Reinstalled SP3 But nothing worked. Please suggest what should I do?? Shamshad Ahmad