What is the impact of being listed on Spamrl blacklist when using a shared IP pool from MarketingCloud?

Being listed on the Spamrl blacklist while using a shared IP pool from MarketingCloud significantly jeopardizes email deliverability. While Spamrl may not be the most widely used or trusted blacklist, a listing suggests issues like non-authenticated mail. The use of a shared IP pool means that your sending reputation is intertwined with other users; thus, the actions of others can lead to your emails being marked as spam or blocked entirely, especially by mid-to-low-end European providers. Experts recommend checking email authentication, proactively monitoring sender reputation, engaging MarketingCloud support, and possibly switching to a dedicated IP to mitigate the risks.

Being listed on the Spamrl blacklist while using a shared IP pool with MarketingCloud significantly impacts email deliverability. Since multiple users share the same IP, the actions of one sender can affect everyone else. If another user engages in spammy practices, all senders using that IP can be impacted, leading to drastically reduced inbox placement rates and damaged sender reputation. Because many ISPs and email providers use blacklists to filter out spam.

Being listed on Spamrl, a spamtrap-driven blacklist, while using a shared IP pool in MarketingCloud significantly impacts email deliverability. While Spamrl might not be widely used or trusted, a rejection message indicates a problem with non-authenticated mail volume. The impact may be more pronounced with mid-to-low-end European providers. The shared IP nature of the pool means that your sender reputation is tied to other users, and their poor practices can lead to your emails being blocked. If your client's mail is authenticated and follows best practices, the issue likely stems from other users in the shared pool. There's not much to do except contact recipients through other means or ask Salesforce Marketing Cloud to address the problem.

Documentation from various sources indicates that a Spamrl listing on a shared IP pool within MarketingCloud significantly impacts email deliverability. A poor IP reputation, caused by blacklisting, can lead to emails being marked as spam or blocked entirely. Shared IPs are especially vulnerable because the actions of all users on the IP affect its reputation. Being listed on a blocklist signals to receiving mail servers that the IP is associated with spam activity. Understanding SMTP error codes is important for troubleshooting deliverability issues resulting from blocklisting. Following bulk sender guidelines and checking IP reputation is important to address reputation issues.