In troubleshooting delivery issues, which DNS-related action can be helpful?

Checking DNS records is a vital step in troubleshooting delivery issues, particularly in email systems. DNS (Domain Name System) plays a crucial role in the email delivery process by translating human-readable domain names into IP addresses, which are used to locate mail servers.

When an email is sent, the sending server queries the DNS to find the appropriate MX (Mail Exchange) records for the recipient domain. If these records are incorrect, outdated, or misconfigured, the email may fail to reach its intended destination, resulting in delivery failures.

Ensuring that DNS records, such as MX and SPF (Sender Policy Framework), are accurate can help resolve problems related to mail delivery, improve the chances of successful email transmission, and reduce issues surrounding spam and authentication. Therefore, checking DNS records is an effective and necessary action in troubleshooting delivery issues.