On 10/03/2010 10:27 AM, Udo Hortian wrote:
Hello,
If I understand correctly, the value of primary_hostname in the file /etc/exim/exim4u_local.conf.inc is used as outgoing IP address if MULTI_IP is NO in this file.
Hi Udo, With MULTI_IP=NO, Exim4U will always connect using the PTR record for the machine's default (primary) IP address and The primary_hostname will be used as the server name in the HELO dialog.
I found a solution for the problem. I set MULTI_IP to YES and I will use the same outgoing IP address for every domain. The documentation says that a unique ip address must be assigned to each domain. I do not really see the reason for this. I think one should have a PTR entry for every IP address that is used as an outgoing IP address in SMTP connections and that the name appearing in this PTR entry should have a A entry pointing to this IP address. But I do not see a technical reason why a different IP address must be used for every domain.
Udo, you are absolutely correct. As long each IP address used by Exim4U in the Multi-IP configuration has a valid PTR record then the Multi-IP configuration should work just fine and you can use the same IP address for as many domains as you want. The only reason why a different IP address should be used for each domain is if you want each domain name to be specifically advertised as the mail host name during the SMTP connections. FYI, Gordon