The DNS Validation does not work, because SMG can not query the l8jbvgbtpf3r9e.8 ap47eae.na6.bnc.salesforce.com domain.
The answer is: ";; connection timed out; no servers could be reached"
instead of:
Non-authoritative answer:
l8jbvgbtpf3r9e.8-ap47eae.na6.bnc.salesforce.com MX preference = 10, mail exchang
er = mx3-sjl.mta.salesforce.com
l8jbvgbtpf3r9e.8-ap47eae.na6.bnc.salesforce.com MX preference = 10, mail exchang
er = mx3-asg.mta.salesforce.com
l8jbvgbtpf3r9e.8-ap47eae.na6.bnc.salesforce.com MX preference = 10, mail exchang
er = mx2-asg.mta.salesforce.com
l8jbvgbtpf3r9e.8-ap47eae.na6.bnc.salesforce.com MX preference = 10, mail exchang
er = mx1-asg.mta.salesforce.com
l8jbvgbtpf3r9e.8-ap47eae.na6.bnc.salesforce.com MX preference = 10, mail exchang
er = mx2-sjl.mta.salesforce.com
l8jbvgbtpf3r9e.8-ap47eae.na6.bnc.salesforce.com MX preference = 10, mail exchang
er = mx1-sjl.mta.salesforce.com
l8jbvgbtpf3r9e.8-ap47eae.na6.bnc.salesforce.com MX preference = 10, mail exchang
er = mx4-asg.mta.salesforce.com
l8jbvgbtpf3r9e.8-ap47eae.na6.bnc.salesforce.com MX preference = 10, mail exchang
er = mx4-sjl.mta.salesforce.com
mx3-sjl.mta.salesforce.com internet address = 204.14.234.99
mx3-asg.mta.salesforce.com internet address = 204.14.232.99
mx2-asg.mta.salesforce.com internet address = 204.14.232.98
mx1-asg.mta.salesforce.com internet address = 204.14.232.97
mx2-sjl.mta.salesforce.com internet address = 204.14.234.98
mx1-sjl.mta.salesforce.com internet address = 204.14.234.97
mx4-asg.mta.salesforce.com internet address = 204.14.232.100
mx4-sjl.mta.salesforce.com internet address = 204.14.234.100
>
All other DNS query works!
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