03-28-2018 07:42 AM - edited 03-08-2019 07:35 PM
Hi,
We are receiving many warning indicating that the IronPort has not been able to connect to the server of "v2.sds.cisco.com". Since several weeks ago the number of emails received for this reason has increased considerably. Warnings say: "Server busy or service unavailable".
We run "telnet v2.sds.cisco.com 443", and we can reach it.
Why are we receiving these warnings???? how could we solve it???
Ironport Version is: 9.7.1-066
03-28-2018 05:40 PM
03-29-2018 07:32 AM
We currently have this too. Checking from cli we usually find either no value returned for nslookup of v2.sds.cisco.com, or a value which differs from that which we get when checking it directly. dnsflush, after which nslookup gives the correct value usually seems to fix it for a while. But as it is only a 60 second ttl it's something we're having to sort several times a day.
03-29-2018 08:14 AM
03-29-2018 04:42 PM
03-29-2018 04:43 PM
04-09-2018 09:15 AM
Using internet root servers. But the issue hasn't been seen again since March 29th, so whatever was returning the wrong values appears now to have updated.
04-09-2018 03:47 PM
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