Forum Discussion
Franky-frank-reg7
Altocumulus
AltocumulusF5 SMTP Fast Template - SNAT Not working as expected
Hello all, I'm having issues with getting SMTP to work with the FAST templates. Specifically, I'm trying to configure an SMTP template with no SNAT option checked so the backend pool members receive...
Franky-frank-reg7 That is true but to simplify the configuration so that you reduce the man hours you might/will spend in the future troubleshoot a non-standard deployment of the F5 you should deploy it as option 1
Paulius
MVP
MVPFranky-frank-reg7 If the virtual server configuration does not have SNAT enable then it should not be performing SNAT. Are you positive the traffic that you are receiving from the F5 isn't health monitors to the pool members? I ask this because the health monitor will come from the F5 and most likely appear as legitimate traffic in a tcpdump. I recommend running the following tcpdump to see what's happening with your traffic when you attempt to use the virtual server.
tcpdump -nni 0.0:nnp host <SMTP_VS_IP> -w /shared/tmp/smtp_tshoot.pcap
The tcpdump mentioned will save a file named smtp_tshoot.pcap to directory /shared/tmp/ which you can copy off and then open in wireshark to see what's happening with your traffic.