• 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.

smtp relay

  1. C

    Issue Plesk as SMTP Relay

    I am wanting to use a Plesk server(Plesk1) as SMTP Relay for another Plesk server(Plesk2) which is hosted on Azure meaning it does not have access to port 25. I have set everything up according to guides that I have been able to find but I cannot seem to find any information on which user on the...
  2. T

    Question Outgoing SMTP Mail Change - What happens to current mail data?

    Hello, I have a Plesk server running on DigitalOcean. DigitalOcean IP addresses all get blocked on one Spam list no matter what you do. This causes a rare amount of outgoing emails sent from Dovecot/Postfix to bounce back. I found a way to fix this by rerouting your outgoing mail server to use...
  3. Lrnt

    Resolved How to define a custom SMTP Relay for one domain?

    Hi, After some researches, I found that it is not possible to define a custom SMTP Relay for a specific domain through Plesk. I read some posts in this forum saying that it is possible by modifying postfix (transport, main.cf etc.). Can someone explain the steps to perform that very simply...
  4. S

    Question Plesk Onyx Smarthost / SMTP Relay Config

    Hello, i use a private vpn service to route all my internet traffic over it. I get problems, with my mail accounts like Gmail, Outlook, GMX when sending from Mac Mail. When i try to verify i get the message: The Server response was unknown ( 46.x.x.x ) Client Host rejected: Access denied...
  5. dj ramc

    local mailbox not relaying

    hello everyone after i setted on relaying with smtp authentication on mailserver settings. still is there possibility to send email to local mailbox without any authentication? is that not weird? i want also smtp authentication for the local mailboxes because of there is tons of mails sending...
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