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Rikgopal's avatar
Rikgopal
Icon for Nimbostratus rankNimbostratus
Jul 13, 2019

Load balancing issue with Posfix servers

We have two postfix servers which we configure to F5 to load balanced. VIP and pool has been set as per normal configuration with port 25(SMTP). Mail is flowing properly but the problem is that we didn't observed any traffic in member statics. Kindly help me..

application delivery
BIG-IP
LTM

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  • Dario_Garrido's avatar
    Dario_Garrido
    Icon for MVP rankMVP
    Jul 13, 2019

    Hello.

    ​

    Before checking stats, you should verify that traffic is flowing correctly. You can test it from F5 using mailx

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    $ echo "body" | mailx -v -s "subject" recipient@somewhere.com

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    Also, you can use tcpdump to verify if backend traffic is reaching both the servers.

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    $ tcpdump -nnei 0.0 host <postfix_ip> and port 25 -c 100

    ​

    KR,

    Dario.