fetchmail certificate verification messages

[Marco Beishuizen]

Hi,

I'm seeing in my logfiles a lot of messages like these from fetchmail:

Jul  3 22:02:54 yokozuna fetchmail[1437]: Server certificate verification 
error: self signed certificate in certificate chain
Jul  3 22:02:54 yokozuna fetchmail[1437]: This means that the root signing 
certificate (issued for /C=SE/O=AddTrust AB/OU=AddTrust External TTP 
Network/CN=AddTrust External CA Root) is not in the trusted CA certificate 
locations, or that c_rehash needs to be run on the certificate directory. 
For details, please see the documentation of sslcertpath and 
sslcertfile in the manual page.

Does anyone know what these messages mean and if they are harmless or not?

Thanks in advance
Regards,
Marco
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