SMTP2GO had 31 outages in the last 2 years totaling 11h 41m of downtime — averaging 1.3 incidents per month.
There were 31 SMTP2GO outages since May 22, 2025 totaling 11h 41m of downtime. Each is summarised below — incident details, duration, and resolution information.
Barracuda is currently undergoing some unexpected downtime. Please check their status page at https://status.barracuda.com or reach out directly to their support team for further assistance. This issue is unrelated to SMTP2GO.
Barracuda has resolved the greylisting issues. Please allow some time for the backlog to clear.
We want to inform our customers in the EU that you may experience some email delays and potential connectivity issues. This is due to urgent upgrades being performed by an upstream provider. We are actively monitoring the situation and working closely with the provider to ensure these upgrades have minimal impact on your service. We appreciate your patience and understanding as we work to resolve this as quickly as possible.
This incident has been resolved.
A small number of customers based in AU may be experiencing delays (emails held as "Processed"). Our team has identified and taken action to resolve this, with the mail queue clearing now. We're continuing to monitor.
This incident has been resolved.
We are currently investigating an issue related to an overloaded inbound server, which is affecting email processing. European users may experience delays in email delivery, with messages temporarily remaining in a "processed" status.
A fix has been implemented and we are monitoring the results.
This incident has been resolved.
We are actively investigating an issue affecting email processing, which may result in connection time-outs.
We are continuing to investigate this issue.
A fix has been implemented and we are monitoring the results.
This incident has been resolved.
Some customers sending to Microsoft-hosted recipients may see delays with email delivery due to an ongoing issue from their side, which they are currently working to resolve. Affected emails will have the event status of "Processed" and "421 4.3.2 The maximum number of concurrent connections per resource forest has exceeded a limit, closing transmission channel" events when viewing the email's Timeline, instead of normal delivery events. We continue to attempt delivery of these emails. For more details, 365 Admin users can go here: https://admin.cloud.microsoft/?#/servicehealth/:/alerts/EX1079935
This incident has been resolved.