Does x-originating-ip impact email deliverability?

Email marketer from Litmus shares a blog post about factors influencing email deliverability. While it doesn't directly mention `x-originating-ip`, it discusses how sender reputation, which is partly tied to IP address, significantly affects whether emails reach the inbox or spam folder.

Email marketer from EmailMarketingForum shares that while not always a direct factor, `x-originating-ip` can indirectly impact deliverability through its contribution to overall sending reputation. If the IP is associated with spam or abuse, it can negatively affect deliverability.

Email marketer from Mailchimp details the importance of sender reputation and how factors like the IP address of the sending server influence whether emails reach the inbox. Although the `x-originating-ip` header is not specifically named, the source IP (which it represents) will influence sender reputation.

Marketer from Email Geeks believes that `x-originating-ip` is more about anti-abuse these days, included by most freemail providers (except Gmail), and removable by Microsoft paying customers.

Marketer from Email Geeks notes that `x-originating-ip` is default with M365 but can be disabled with an outbound filter.

Email marketer from Reddit mentions that a poor IP reputation associated with the `x-originating-ip` can lead to deliverability issues. They advise checking the IP against various blocklists and ensuring proper authentication is set up.

Email marketer from Mailjet shares that IP reputation significantly impacts deliverability. While they don't specifically mention `x-originating-ip`, they emphasize that a poor IP reputation can lead to emails being marked as spam, highlighting the importance of IP address management for sending.

Email marketer from Quora suggests the `X-Originating-IP` header can influence spam filtering decisions. They note that if the IP is associated with known spam sources, it can negatively impact deliverability.

Email marketer from EmailGeeksForum shares that `X-Originating-IP`'s weight in spam filtering varies, but is more significant for residential or blacklisted IPs. Its presence can negatively impact deliverability in these cases.

Email marketer from Stackoverflow shares that `X-Originating-IP` is indeed checked by some spam filters, especially for residential IPs or ranges known for spam activity. The summary suggests that having such an IP in the header might negatively impact deliverability.

Email marketer from Email on Acid explains how authentication methods like SPF and DKIM can improve deliverability. While it does not explicitly mention `x-originating-ip`, it points out that authenticating your emails helps establish a good sending reputation and prevent your emails from being flagged as spam. Thus implies the IP is part of the overall authentication 'package'.

Expert from Word to the Wise discusses the importance of proper authentication (SPF, DKIM, DMARC) for improving email deliverability. Though not explicitly mentioning `x-originating-ip`, it states that authentication helps build a positive sender reputation and reduces the chances of emails being flagged as spam, meaning all information relating to the IP is relevant.

Expert from SpamResource explains that maintaining a clean IP reputation is crucial for email deliverability. While they do not directly mention `x-originating-ip`, they emphasize that the originating IP's reputation significantly influences whether emails reach the inbox or are filtered as spam.

Expert from Email Geeks explains that filters don't need the `x-originating-ip` value to do 2nd received line filtering, they can just walk headers, and highlights trust issues with the header due to spammers potentially faking it.

Expert from Email Geeks suggests that `x-originating-ip` may be used for 2nd-received-line filtering and questions the reason for including it in outbound mail if not intending such filtering.

Documentation from SparkPost covers common email deliverability issues. They discuss IP warming and maintaining a good IP reputation. Although not explicitly mentioning `x-originating-ip`, it highlights how closely deliverability is tied to the originating IP address and its history.

Documentation from Microsoft Learn explains that Exchange Online Protection (EOP) and Office 365 Advanced Threat Protection (ATP) use various methods to identify and block spam, including analyzing the originating IP address of the sending server. While not explicitly mentioning `x-originating-ip`, it implies that the originating IP is a factor in deliverability.

Documentation from RFC Editor details how email headers, including `Received` headers, are used to trace the path of an email. Although it doesn't specifically address `x-originating-ip`, the document provides context on how email systems track the origin of messages, which can be used for filtering and deliverability decisions.

Documentation from Cisco discusses the SenderBase reputation system, which tracks IP addresses and their sending behavior. While not directly mentioning `x-originating-ip`, it indicates that the reputation of the originating IP address is a crucial factor in determining whether an email is considered spam, which suggests it will impact deliverability.

Documentation from Postmark highlights the importance of proper email headers for deliverability. It implicitly touches upon the relevance of the originating IP by mentioning that properly configured headers help ISPs identify legitimate senders and prevent spam, which implies that all IP info is considered.