block outsiders sending email through port 25

Discussion in 'qmail' started by arafath, Mar 15, 2015.

  1. arafath

    arafath New Email

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    Mar 15, 2015
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    Hi All,

    we are providing shared email hosting services to customers. I would like to know how can we block anonymous persons sending emails to customers using port 25. I cannot block port 25 because i cannot receive incoming emails. we are using qmail as MTA.

    Please suggest.[
     


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