If the links in the email body are different to the sender/return path in the email header, then it can be an indicator of spam and can affect deliverability.
Never use a generic mail provider (eg gmail / outlook / hotmail / etc) as your from address - guaranteed to have deliverability issues.
DMARC (Domain-based Message Authentication, Reporting & Conformance) is an email authentication protocol designed to give email domain owners the ability to protect their domain from unauthorized use.