When sending an email, there are a variety of reasons why it may not be delivered. One of the most common errors is the “sender agreement not found” message. This error indicates that the sender`s email server cannot be verified as a legitimate sender, and thus, the recipient`s server refuses to accept the message.
To understand why this occurs, it`s essential to understand the basic structure of email systems. When an email is sent, it goes through several steps before reaching its final destination. The sender`s email client sends the message to the sender`s email server, which then looks up the recipient`s email server`s address via the Domain Name System (DNS). The recipient`s server then verifies that the sender is authorized to send emails on behalf of that domain.
If the recipient`s server cannot verify the sender`s identity, it will reject the email with the “sender agreement not found” error. This can happen for many reasons, including:
1. The sender`s domain is not configured correctly. If the DNS records for the sender`s domain are not set up correctly, the recipient`s server may not be able to verify that the sender is authorized to send emails on that domain`s behalf.
2. The sender is using an unauthorized email service. Certain email services may not be authorized to send emails on behalf of a particular domain. For example, if a sender is using a free email service like Gmail or Yahoo, their emails may not be accepted by some servers.
3. The sender`s email is flagged as spam. If the recipient`s server detects that the sender`s email is spam, it may reject the message with the “sender agreement not found” error. This can happen if the sender`s email contains certain trigger words or if the sender`s IP address is associated with spamming activity.
To avoid the “sender agreement not found” error, it`s essential to ensure that your email system is set up correctly and that you are using a legitimate email service. Additionally, be sure to avoid trigger words and to follow best practices for email marketing. By doing so, you can increase the chances that your emails will be delivered successfully and avoid frustrating errors like this one.