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Please be more specific, when you say support in what context are you referring? For instance, in the case of OSPF, RIP, etc. are you asking if we support these routing protocols as a layer three routing device? We support a wealth of applications and protocols and have the ability to create custom application signatures to address any apps that might be missing from our suite. For application control via our firewall and policy please refer to the applipedia for the apps in question. Thanks, Phil ... View more

You probably need to open a support ticket for this issue.  Have you used the command  "show session all filter source <IP_addr>"  to see the sessions created by the client and the mail server?  Did you use "show session id XXXX) to see the details of the session? Is the traffic being processed by the correct NAT and security rules? You should enable a sniffer on the web server to see if the traffic is even arriving and to verify the return traffic is being sent and sent to the correct next hop. You can also creat a packet filter for the mail server address and then check the global statistics while applying the packet filter to see if there is anything suspicious about the traffic flows. Focus on the "drop" and "warning" catagories. debug dataplane packet-diag set filter match source <IP> debug dataplane packet-diag set filter match destination <IP> debug dataplane packet-diag set filter on debug dataplane packet-diag show setting Run tis command to set the counters to 0. The run it again every 5-15 seconds to see the changes. show counter global filter packet-filter yes delta yes Steve Krall ... View more