Mailosaur incident

Intermittent connectivity issues for SMTP and POP3

Minor Resolved View vendor source →

Mailosaur experienced a minor incident on February 6, 2024 affecting SMTP (25) and POP3 (110) and 1 more component, lasting 3h 28m. The incident has been resolved; the full update timeline is below.

Started
Feb 06, 2024, 03:01 PM UTC
Resolved
Feb 06, 2024, 06:29 PM UTC
Duration
3h 28m
Detected by Pingoru
Feb 06, 2024, 03:01 PM UTC

Affected components

SMTP (25)POP3 (110)SMTP (2525)POP3 (995)SMTP (587)SMTP (25) with STARTTLSSMTP (2525) with STARTTLSSMTP (587) with STARTTLS

Update timeline

  1. investigating Feb 06, 2024, 03:01 PM UTC

    We are aware of an issue impacting come clients connecting via SMTP and POP3. This is being actively investigated, we will update as soon as possible.

  2. investigating Feb 06, 2024, 04:40 PM UTC

    The issues impacting SMTP and POP3 for some customers only relate to connections outside of Europe. Our team believes this issues is related to Google Cloud Platform network load balancing, but we are still investigating at this time. The nature of SMTP means that emails will automatically be retried and arrive in most cases, but you may see delays in arrival.

  3. identified Feb 06, 2024, 05:26 PM UTC

    Google Cloud Networking have confirmed that there is a known issue with increased network latency which is causing issues with SMTP/POP3 connections from outside Europe. Google have confirmed their networking team is actively investigating this issue and attempting to fix ASAP.

  4. identified Feb 06, 2024, 05:38 PM UTC

    Mitigation work is currently underway by our Google's engineering team. We do not have an ETA for mitigation at this point. We will provide an update within the next hour.

  5. monitoring Feb 06, 2024, 06:01 PM UTC

    Services are returning to normal for all customers. We will continue to monitor for the next few hours.

  6. resolved Feb 06, 2024, 06:29 PM UTC

    This incident is now closed following a solution implemented by Google.