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I've just built a postfix server in amazon EC2 with an elastic IP. And I found that while I can connect to and send emails to my mail server when I telnet to localhost when I telnet to the external FQDN I get relay denied. I'll first demonstrate success, then failure. root@mail:~# telnet...

Hello, I have setup a new postfix sertver and when I send mail to the domain (crispycode.com) the mail will bounce. If I send to the mail host name (mail.crispycode.com) the mail is shown as delivered in the logs. However if you inspect the cur directory on the command line in the user's...

Hi again, folks I have decided to have a fresh start using Ubuntu Server 9.10 created by RightScale on the AWS cloud. I have gotten farther than I did under CentOS due to the dearth of Red Hat-based packages for the components I need. Prior to my attempt to integrate Amavis with Postfix I...

I can't telnet into the courier MTA service. I installed courier-0.64.2.20100320 onto a CentOS 5.4 instance on an AWS cloud instance with these configuration options: ./configure --sysconfdir=/etc/courier/ --without-ipv6 --with-db=gdbm --with-shellpath=/bin:/usr/bin:/usr/local/bin...

I am trying to get one postfix server (a zimbra server) to authenticate through sasl to another postfix server (production mail) so it can be used as a relay host. But I notice that the authentication method in /etc/postfix/sasl/smtpd.conf on the other machine is auxprop because that machine...