Is your server using authentication on the relay-host? If not this MUST NOT work because if it would work the relayserver coul be used from everybody out there for spam
Am 14.02.2011 08:59, schrieb Georg Schönweger: > Hi, > > yesterday i received a failure-notice; > Remote host said: 554 5.7.1 <i...@domain.com>: Relay access denied --> > this is the error-message which i received from the final recipient. > The email was send from our webserver. The webserver (postfix) sends the > email via relayhost (another external postfix Server) to the world outside. > Does this mean that the email provider from the recipient doesn't allow > the use of relayhosts? Is it generally better to not use relayhosts? > ..we had problems with spam some years ago if we sent mails directly > with postfix, so we used our external email provider as relayhost. But i > think this was because we didn't have a valid RDNS entry. So should i > switch off the relayhost?
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