SoftLayer blocking TCP port 25 (SMTP)

  • Saturday, 6th February, 2016
  • 06:09am

As of February 1, 2016, SoftLayer began blocking all outbound connections through TCP port 25 (SMTP). This will affect all SoftLayer datacenter locations.

This change will prevent all connections for mail servers through the default outgoing mail port 25. Mail servers located in the SoftLayer locations should still be able to receive email on port 25 and it is only the outgoing mail that will be affected.

We are currently looking through our options, for find a solution with the SMTP ports

You may not receive emails from us due to this issue.

Once it resolve we will email you

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