Postfix - help

  • Hello,

    A hacker was able to use the server to spam pc. It is installed in version 1.2.1 imscp.
    OVH has blocked port 25.
    I changed the and files as I could.
    Since all mail transfer type are blocked.
    The error message in the postqueue is: (temporary failure. Command output: /usr/bin/maildrop: Unable to create a dot-lock at

    I ask for a little help.

  • I think the spam mails are sended through php (customer website)..

    PS: I've moved the thread to offtopic -> Linux & Co.