I have hit on this before a long time ago and now it has grown into a bigger problem. I will outline it best as possible: PROBLEM A: A site on our ISPconfig server uses phpBB and i found out most people on aol, yahoo, and most other servers are not getting emails that phpBB is generating IE: new registrations, remiders, etc... I have attached below a log of my mail LOG when i tried to send a new registartion email from phpBB to a yahoo account Code: May 22 14:49:19 server postfix/smtpd: connect from localhost[127.0.0.1] May 22 14:49:19 server postfix/smtpd: A69BE3658D: client=localhost[127.0.0.1] May 22 14:49:19 server postfix/cleanup: A69BE3658D: message-id=<[email protected][email protected] After a short deley yahoo mail generated this responce on my mail log file: Code: May 22 14:51:11 server postfix/smtpd: connect from unknown[188.8.131.52] May 22 14:51:11 server postfix/smtpd: warning: connect to private/tlsmgr: No such file or directory May 22 14:51:12 server postfix/smtp: 7073440D5E: to=<[email protected][email protected][email protected] So then i tried registering and having phpBB send a message to my aol account and here is what that generated: Code: May 22 14:49:31 server postfix/smtp: A69BE3658D: to=<[email protected][email protected][email protected][email protected] AOL Finally showed the message on my AOL mail after many minutes but yahoo still no go. I CAN email yahoo account no problem using my webmail on the same ispCONFIG server. any advice??? PROBLEM B: another program ran on the ispconfig server is a voodoochat program and yahoo users also do not get new sign up emails on that program here is the mail log for a email sent to yahoo in that voodoochat program on the ispConfig server: Code: May 22 14:55:26 server postfix/smtp: C39D14193D: to=<[email protected][email protected][email protected] These two php programs sent emails to all servers and yahoo before on a no ispconfig server in the past so what am i missing to make them work with getting the emails to go through in ispConfig servers now?? Thanks in advance!!!!