Three records, three different jobs
A, CNAME and MX records are the most common entries in the DNS zone: A links the domain to an address, CNAME acts as an alias to another name, MX indicates the server that receives email.
- A: associates a name with the IP address of the website's server
- CNAME: points a name (for example a subdomain) to another name
- MX: sets where to deliver the domain's email
A mistake in one of these records can take the website offline or block email, which is why it is best to have them checked by whoever looks after the project, for example in Cantù, in the province of Como.
DNS propagation is the time it takes for a change to the records to spread across the network, because many servers keep the old copy for a while. It depends on TTL and caching, so it needs planning: for companies between Como, Milan and Lugano we do it without downtime.
Nameservers are the servers that hold the domain's DNS zone and say where website and email are located. Changing them moves the management of all records, so it is best to copy the current zone first. We take care of it from Cantù for companies in Como and Brianza.
To connect a domain to a website, you set a record in the DNS that points to the website's server, then configure the server to recognise that domain and activate the security certificate. From Cantù, in the province of Como, we follow the whole step for companies in Milan and Brianza.
SPF, DKIM and DMARC are three email authentication systems: SPF lists the servers authorised to send, DKIM signs the message, DMARC decides what to do if the checks fail. They are good practice for businesses in Como, Milan and Lugano.
The server has a significant effect on website response time, together with code, content weight and configuration. That is why in Cantù, in the province of Como, we optimise hosting and website together, also for companies in Brianza, Milan and Lugano with content-rich projects.