Having Sophos automatically update my endpoint protection to v10 on my production sharepoint farm, for some strange unknown reason, which I might add has taken me 27 days to figure out, it stopped all farm alerts and emails. After having contacted Microsoft Support and worked through every hoop to identify and rectify, we found that by completely removing Sophos from the front ends, alerts and emails sprang back to life.
Apparently it is due to Sophos taking over the tcp/ip configuration from the default. Running this command from a command prompt: netsh winsock show catalog
shows the first four entries dominated by Sophos. After removing Sophos the first entry is:
Winsock Catalog Provider Entry
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Entry Type: Base Service Provider
Description: MSAFD Tcpip [TCP/IP]
This is required to be the first entry to allow alerts and emails to work.
Hope this helps someone else.
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