On 8/23/11 3:51 AM, Anne Wilson wrote:
mydestination = $myhostname, localhost.$mydomain, $mydomain, xxx.lan, xxx.org
This morning I restored the old main.cf, which uses the old network settings of xxx.net. Now mail is being received, but sending mail is being refused by my server. I have two sending profiles - one that sends to the server (CentOS 6), which then should use /etc/postfix/transport to separate local mail and external mail, sending the external mail to the ISP's smtp server. The second profile is googlemail smtp, used when I'm away from home.
Whichever I try to use I get a message that my mail server has refused the connection. I'm still trying to work out why. It sounds like authentication problem, but I can't see why it's happening.
Unless the next hop requires smtp authentication, the likely reason is that the 'From: ' address doesn't have a DNS-resolvable domain name.