How to troubleshoot Orange.fr bounces (SMTP greeting failed) in Klaviyo?

Email marketer from EmailGeeks Forum responds that if using a shared IP address in Klaviyo, the sender's reputation could be affected by other users on that IP. They advise contacting Klaviyo support to inquire about the reputation of the shared IP and potential solutions.

Email marketer from Reddit explains that you must ensure that a reverse DNS record (PTR record) is properly configured for your sending IP address, so it resolves back to your domain name.

Email marketer from Quora explains that Orange.fr is strict with throttling the amount of emails it receives and recommends using a dedicated IP address instead of a shared one. This helps build the sender's own reputation.

Email marketer from Reddit shares that Orange.fr is known for aggressive throttling and suggests implementing a connection management system to limit simultaneous connections to their servers. They also recommend warming up the IP address gradually.

Email marketer from Email Geeks explains that Orange.fr has specific requirements for simultaneous connections that ESPs may not implement. Suggests checking Orange.fr's website for documentation and contacting them for assistance.

Email marketer from Email Geeks shares to not use the abuse email address anymore, use the contact form from the postmaster orange website instead.

Email marketer from Gmass explains that one possible failure cause is a mismatch between your 'HELO' or 'EHLO' message and your server configuration.

Email marketer from Stackoverflow shares that Orange.fr is known to use greylisting techniques. If it's greylisting, retry sending the email. This will delay the email and is difficult to troubleshoot.

Email marketer from EmailDrips Community shares that SMTP failures may be because of the email sending server's inability to establish proper communication or handshake with the receiving email server.

Expert from Word to the Wise emphasizes the importance of sender reputation for email deliverability. They recommend implementing feedback loops, managing complaint rates, and authenticating your email using SPF, DKIM, and DMARC to build a positive sender reputation and improve deliverability to Orange.fr.

Expert from Spam Resource explains that a common cause of SMTP greeting failures is an improperly configured EHLO/HELO domain. Ensure that the domain used in your EHLO/HELO command is a valid, resolvable domain with a corresponding A record and PTR record.

Expert from Email Geeks explains that when using a shared IP, it's the ESP's responsibility to manage settings like connection limits, not the individual sender's.

Expert from Email Geeks explains the importance of the EHLO greeting in SMTP transactions. She shares that a generic EHLO greeting (like one from a shared Klaviyo IP) doesn't provide the receiving server with enough information about the sender, potentially leading to deliverability issues. She explains that the EHLO contains the name of the system sending the message.

Expert from Spam Resource notes that Orange.fr is known to use aggressive reputation filtering. They recommend monitoring your IP and domain reputation using tools like Sender Score and engaging in proactive list hygiene to maintain a positive sending reputation.

Documentation from RFC specifies that the EHLO command in SMTP must include a valid, fully-qualified domain name (FQDN) of the sending server. The FQDN must have a corresponding A record and reverse DNS (PTR) record. A mismatch can lead to greeting failures.

Documentation from Orange Postmaster explains that SMTP greeting failures can occur if the EHLO/HELO domain does not match the sending IP's reverse DNS or if the server is not properly configured for mutual TLS. They recommend ensuring proper DNS records and TLS configuration.

Documentation from MXToolbox explains that the cause of a failure in your SMTP greeting is usually a problem with your server settings, hostname, or DNS configuration. It is important to keep your server's hostname and reverse DNS record in sync.

Documentation from Klaviyo Help Center explains that ensuring proper sender authentication (SPF, DKIM, DMARC) is crucial for deliverability. They recommend checking Klaviyo's settings to confirm that these authentication methods are correctly configured for your sending domain.

Documentation from Sparkpost defines an SMTP greeting failure as, 'Indicates that the remote system was unable to properly respond to an incoming connection. This may be due to a misconfiguration on the sending host, which prevents the handshake from completing.'