I'm using the Postfix mail server and I have 6 IPs available. I'd like to use another IP to it with my pricipal ip.
How can I do this?
For example: main IP: 66.66.66.66 other IP: 66.66.66.67
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Do you want postfix listen in 2 different IP addresses? – Eric Carvalho Mar 08 '13 at 23:26
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yes when postfix send mail uses thoses 6 ips randoomly – Omer Stimpack Mar 08 '13 at 23:32
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1Can you tell a bit about the background of your question? What advantages does this feature bring you? – qbi Mar 08 '13 at 23:58
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I'd like to know the reason, too. It's quite unusual. Could you explain why are 6 IP addresses need? And why do you want postfix to listen in 2 of them and not just 1? – Eric Carvalho Mar 09 '13 at 00:19
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my vps come with thoses ips and i want postfix access to them. – Omer Stimpack Mar 09 '13 at 00:37
2 Answers
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Edit the file /etc/postfix/main.cf (sudo nano /etc/postfix/main.cf), search for the line:
inet_interfaces = all
And change it to:
inet_interfaces = 127.0.0.1, 66.66.66.66, 66.66.66.67
Save, exit and restart postfix (sudo service postfix restart).
Eric Carvalho
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When i restart it: postfix: fatal: parameter inet_interfaces: no local interface found for 66.66.66.67 (the new ip) – Omer Stimpack Mar 09 '13 at 00:07
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@stimpack Are you sure one of your interfaces is configured with this new IP? The message says this address wasn't found in any interface. It isn't really 66.66.66.67, is it? – Eric Carvalho Mar 09 '13 at 00:14
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@Carvalho i just assigned thoses ips in my vps, i didn't make any interface, how can i make it? ( 66.66.66.67 was just example) – Omer Stimpack Mar 09 '13 at 00:25
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@stimpack Please edit your QUESTION and include the output of
ifconfig. – Eric Carvalho Mar 09 '13 at 00:30
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In my case, I configured the machine to use only IPv4.
cat /etc/sysctl.d/local.conf
# Disable IP V6
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
and configure postfix to use only IPv4
vi /etc/postfix/main.cf
use only IP v4
inet_protocols = ipv4
and off-course
systemctl restart postfix.service
Radu Gabriel
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