Are there any known issues with DNS resolution in Sophos? On my home XG and at one client this morning, DNS will just periodically stop working. tcpdump shows XG sending requests upstream in response to my queries, and responses coming back, but the query is still reported as a failure/timeout by Sophos even though tcpdump shows that it got sent an answer to its query.
At home, the issue seems to occur roughly the same time of day, and then comes good after 5-15 minutes (pretty much always by the time I've got things set up to capture packets). At the client site this morning we ended up rebooting to get it going again as it was already down for 30 minutes and they couldn't wait any longer.
I never find anything telling in the logs, although Sophos XG logs are a very noisy place.
James
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