On Thu, Jun 27, 2013 at 09:51:50AM +0200, Fabrizio Monti wrote: > I did some testing and I determined that if I configure the SMTP > mail client on port 25 can send e-mails only for my domains. > But if I connect to telnet on port 25 I can send emails to all > the domains. I can stop this?
First, that does not make sense. "Telnet on port 25" is the same as any MUA, it's just a means to speak SMTP to a SMTP server. There's no fundamental difference between a MUA and someone using telnet to speak SMTP, except perhaps that the MUA is faster and makes no errors. Second, IIUC what you are saying, it could be that the MUA is configured to AUTH, and when AUTH is refused it rightly goes away. I'll go further to venture a guess that your telnet client's IP address is in $mynetworks, and that you neglected to remove "permit_mynetworks" from your recipient (or relay) restrictions. We have no way to see what you have configured! We can't read your logs. If you want help you have to SHOW us these things. http://www.postfix.org/DEBUG_README.html#mail See also: http://www.postfix.org/BASIC_CONFIGURATION_README.html#relay_from http://www.postfix.org/postconf.5.html#permit_mynetworks http://www.postfix.org/SASL_README.html#server_sasl_authz -- http://rob0.nodns4.us/ -- system administration and consulting Offlist GMX mail is seen only if "/dev/rob0" is in the Subject:
