Recently we encountered an issue sending an email from one domain, hosted on Office 365 to another domain also hosted on Office 365. The destination email address had an apostrophe e.g. tim.o'reilly@example.org and we were getting the error message. 554 5.4.14 Hop count exceeded …

Google have published some statistics about the rate of IPv6 adoption. They have a better view into traffic and adoption rates than most and so their statistics are generally considered to be the most accurate, but I've always found their graph a little puzzling. Some days it's around 9% and …