Why am I getting Sanesecurity errors in Outlook?

Email marketer from Stack Overflow indicates that incorrect SPF records can cause email deliverability issues. If your SPF record is not set up correctly, receiving servers may flag your emails as spam or block them entirely.

Email marketer from Reddit says that it's important to check if your URLs are listed on any blocklists. Poor URL reputation can be a reason for emails getting blocked and tools exist to check URL reputation.

Email marketer from DNS Records explains that DKIM adds a digital signature to outgoing emails, which receiving servers can use to verify the email's authenticity. Implementing DKIM helps prevent email spoofing and improves deliverability.

Email marketer from Spam Resource answers that Sanesecurity's JURLBL is a database used to block spam emails and it contains URLs which have been identified as sources of spam. If a URL used in your email matches an entry in the JURLBL database, Sanesecurity's spam filters will flag and block your email.

Email marketer from Sender.net explains that several factors including sender reputation, email content, and authentication protocols affect deliverability. Maintaining a good sender reputation is crucial and ensuring email content is not spammy.

Email marketer from Web Hosting Forum says that on shared hosting, other users might be sending spam from the same IP address, which can affect your email reputation. If the IP address is blacklisted, your emails can be blocked.

Email marketer from EmailToolTester answers that using URL shorteners can negatively impact email deliverability. Many spam filters flag shortened URLs as suspicious, especially if the shortener is associated with spamming activities.

Email marketer from Mailjet explains that bounce messages indicate why an email wasn't delivered. A 550 error is a permanent failure, meaning the email server refused to deliver your message for various reasons including spam content. It is important to find the specific reason within the message.

Expert from Word to the Wise explains that the hexadecimal suffix in a Sanesecurity JURLBL listing often identifies the specific URL that triggered the listing. This can help you pinpoint the problematic link in your email.

Expert from Email Geeks explains that jurlbl lists URLs of bad content, so headers won’t help Sanesecurity identify the problem. He also mentions that mmtrkr.com is likely the problem and, if it's Mazzel, it doesn't feel like a false positive. Recommends not bugging them as it’s a reasonable listing.

Expert from Word to the Wise answers that Sanesecurity error messages in email bounces indicate that a URL within your email has been flagged as malicious. Understanding the specific error message is key to diagnosing the issue.

Documentation from dmarcian explains that a DMARC policy helps domain owners specify how email receivers should handle messages that fail SPF or DKIM checks. Implementing DMARC correctly helps prevent email spoofing and phishing attacks.

Documentation from Sanesecurity explains that to be listed on JURLBL, their systems will have detected your URL in SPAM or Malware emails. It is an automated listing, and human review is not generally performed unless requested.

Documentation from Sanesecurity clarifies the hex suffix is a signature of a specific url to determine the specific problem that resulted in listing the URL. This allows Sanesecurity to target problems more accurately.

Documentation from RFC specifies that 5xx SMTP codes indicate a permanent failure. A 550 error specifically suggests that the command failed because the user's mailbox was unavailable, or because of policy reasons (related to spam or viruses).

Documentation from Microsoft details that Outlook uses various filters to identify and block potentially harmful content. These filters can sometimes produce false positives, blocking legitimate emails if they contain characteristics associated with spam or malware.