One of the most critical parts of MailMum is to provide DNS service, which handles IP blacklisting for our customers. They are the primary service our customer’s mail servers are using.
As the DNS flag day 2020 directed to operational and security problems in DNS caused by Internet Protocol packet fragmentation, we’ve tested all our DNS services to align these rules.
Why you should test too? DNS is a distributed system and one of the most critical parts of networks.