Gmail “Ignored” bounces during IP re-warming

Hi ​@Silvio6 

You should reach out to Adobe deliverability to address any potential issues. I recommend reaching out to them as soon as possible to review the logs and provide you complete details on the errors as these details are not available through the UI.

They can also provide a strategy and practical guidance for managing email volumes after a period of low volume.

Thanks,

David

​@Silvio6 

Gmail defers and throttles mail when sender reputation is low — very common during IP or domain re‑warming, especially after inactivity. These appear in AJO as “Ignored”.

Since Gmail enforces DMARC so missing DMARC or p=none may increase Gmail throttling, leading to timeouts and slow warm‑up.

This document provides a detailed IP warm‑up guideline:
https://experienceleague.adobe.com/en/docs/journey-optimizer/using/configuration/implement-ip-warmup-plan/ip-warmup-deliverability-guide

Hi ​@Silvio6 

You're seeing 2 different things mixed together:

1.Timeout / "Ignored" bounces during warm‑up

In AJO, many Gmail issues show up as Timeout with type=ignored. That usually means:

• Gmail is deferring or throttling your IP (421/4.xx "try again later"),
• AJO keeps retrying up to the configured retry window,
• If Gmail never finally accepts, you get a timeout event that's logged as an "Ignored" bounce, not a hard/soft one. This is very common while IP / subdomain re‑warming, especially if volume or data quality isn't perfect. See the retry behaviour here: https://experienceleague.adobe.com/en/docs/journey-optimizer/using/configuration/monitor-reputation/retries

2.DMARC p=none and Gmail/Yahoo rules

For Gmail/Yahoo (Feb 2024 changes) the key point is:

• You must have a valid DMARC record for the sending domain.
• Having p=none is allowed (it's "monitoring mode") and does not by itself cause throttling/blocks, as long as SPF/DKIM are aligned. So yes, missing or broken DMARC can contribute to deferrals/timeouts, but "p=none" is fine if the record is syntactically correct and aligned. https://experienceleague.adobe.com/docs/deliverability-learn/deliverability-best-practice-guide/additional-resources/guidance-around-changes-to-google-and-yahoo.html?lang=en https://experienceleague.adobe.com/en/docs/deliverability-learn/deliverability-best-practice-guide/additional-resources/technotes/implement-dmarc