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Hi...
My server is sending spam and the sender is empty.. (from=<>).
Example:
Nov 26 23:42:38 mail postfix/qmgr[9059]: 9A7BD2A2917: from=<>, size=5659, nrcpt=1 (queue active)
Nov 26 23:42:39 mail postfix/smtp[9979]: connect to mailserver.innvento2.org[190.95.213.11]:25: Connection refused
Nov 26 23:42:39 mail postfix/smtp[9979]: 9A7BD2A2917: to=<noresponder@innvento2.org>, relay=none, delay=13035, delays=13035/0.01/0.31/0, dsn=4.4.1, status=deferred (connect to mailserver.innvento2.org[190.95.213.11]:25: Connection refused)
the remote server refused me but i would want to know how to can i block this mails.
Thank you.!!!!