450 too many SMTP connection from…..

  • Hi,
    First excuse my bad english, i speak only french,
    I have pfsense box(bridge mode, fixed ip) in my networks (40 users)
    Sometimes impossibe to send mail from outlook or thunderbird, i have this erreur : 450 too many smtp connection from myip…
    Alow with my basic router 3com i dont have this problems.
    What is the solution.


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