Fix your DNS, the ".com" glue records don't match your NS records, this
can lead to problems with some DNS caching resolvers.

    $ dig +noall +ans +auth +add -t ns e-surland.com @f.gtld-servers.net
    e-surland.com.              172800  IN      NS      ns1.e-surland.com.
    e-surland.com.              172800  IN      NS      ns2.e-surland.com.
    ns1.e-surland.com.  172800  IN      A       146.255.100.24
    ns2.e-surland.com.  172800  IN      A       213.27.204.236

    $ dig +noall +ans +auth +add -t ns e-surland.com @ns1.e-surland.com
    e-surland.com.              259200  IN      NS      ns1.e-surland.com.
    ns1.e-surland.com.  259200  IN      A       146.255.100.24

    $ dig +noall +ans +auth +add -t ns e-surland.com @ns2.e-surland.com
    dig: couldn't get address for 'ns2.e-surland.com': not found

Especially since one of the IPs in the glue records is a lame
delegation:
 
    $ dig +noall +ans +auth +add -t ns e-surland.com @213.27.204.236 | sort
    .                   3600000 IN      NS      A.ROOT-SERVERS.NET.
    .                   3600000 IN      NS      B.ROOT-SERVERS.NET.
    .                   3600000 IN      NS      C.ROOT-SERVERS.NET.
    .                   3600000 IN      NS      D.ROOT-SERVERS.NET.
    .                   3600000 IN      NS      E.ROOT-SERVERS.NET.
    .                   3600000 IN      NS      F.ROOT-SERVERS.NET.
    .                   3600000 IN      NS      G.ROOT-SERVERS.NET.
    .                   3600000 IN      NS      H.ROOT-SERVERS.NET.
    .                   3600000 IN      NS      I.ROOT-SERVERS.NET.
    .                   3600000 IN      NS      J.ROOT-SERVERS.NET.
    .                   3600000 IN      NS      K.ROOT-SERVERS.NET.
    .                   3600000 IN      NS      L.ROOT-SERVERS.NET.
    .                   3600000 IN      NS      M.ROOT-SERVERS.NET.

-- 
        Viktor.

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