• Please be aware: Kaspersky Anti-Virus has been deprecated
    With the upgrade to Plesk Obsidian 18.0.64, "Kaspersky Anti-Virus for Servers" will be automatically removed from the servers it is installed on. We recommend that you migrate to Sophos Anti-Virus for Servers.
  • The Horde webmail has been deprecated. Its complete removal is scheduled for April 2025. For details and recommended actions, see the Feature and Deprecation Plan.
  • We’re working on enhancing the Monitoring feature in Plesk, and we could really use your expertise! If you’re open to sharing your experiences with server and website monitoring or providing feedback, we’d love to have a one-hour online meeting with you.

AJAY

New Pleskian
Hi,

Plesk Onyx is installed on my clients's Windows VPS and he is able to send mails on gmail and some private domains as well as able to receive them also. But unable to send mails on yahoo, rediff, outlook and some private domains. Instead, an error mail of mail delivery failed gets in his inbox. Below is one of the error message received when mail is send from outlook :

MailEnable: Message could not be delivered to some recipients.
The following recipient(s) could not be reached:

Recipient: [SMTP:[email protected]]
Reason: 550 5.7.1 Unfortunately, messages from [185.136.159.137] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3140). You can also refer your provider to Troubleshooting. [BN8NAM04FT056.eop-NAM04.prod.protection.outlook.com]


Please let me know why this issue arises.


Thanks
 
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