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Hello list, I will wish to implement an architecture of outgoing mail
servers. We already have a SQL load balancer. Here is my plan. All ports
are standard and LVS is configured with direct routing
1. Web server response directly to a client
2. Mysql server repose directly to a web server
3. Servers generate emails and push email to a load balancer on port 25
4. Mail servers send mails to different recipients.
INTERNET
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+------+
|ROUTER|
+------+
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+---+----+
Outbound mail server<-------| LVS |-----------> Web server
+---+----+
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+-----------------------+----------------------------------+
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Servers that generate emails. Mysql Server
Here is my set :
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# ====================
# OUTBOUND MAIL SERVER
# ====================
virtual=10.0.0.102:25
emailalert="admin@xxxxxxxxxxxxxxx"
real=10.0.0.96:25 gate
real=10.0.0.97:25 gate
real=10.0.0.98:25 gate
real=10.0.0.97:25 gate
service=smtp
scheduler=rr
fallback=127.0.0.1:25 gate
protocol=tcp
checktype=negotiate
--------------------------------------------------------------------------------
On outbound mail server, I add in a rc.local :
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/bin/echo 1 > /proc/sys/net/ipv4/conf/eth0/arp_ignore
/bin/echo 2 > /proc/sys/net/ipv4/conf/eth0/arp_announce
/sbin/ifconfig lo:0 10.0.0.102 netmask 255.255.255.255 up
--------------------------------------------------------------------------------
However nothing works. When I make a test with telnet :
- through the load balancer:
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telnet 10.0.0.102 25
Trying 10.0.0.102...
telnet: Unable to connect to remote host: Connection refused
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- directly to the mail server :
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telnet 10.0.0.96 25
Trying 10.0.0.96...
Connected to 10.0.0.96.
Escape character is '^]'.
220 XXXXXXXXXXXXXXXXXXXX ESMTP Exim 4.80 Thu, 16 Oct 2014 13:58:49 +0200
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Do you have any idea? I'm a bit stuck.
Thank you to all.
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