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DevOps & SysAdmins: Postfix does not reject wrong client and HELO name
Roel Van de Paar
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DevOps & SysAdmins: Postfix Problem (helo/hostname mismatch)! (3 Solutions!!)
Roel Van de Paar
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DevOps & SysAdmins: SMTP Server 550 Access denied - Invalid HELO name (4 Solutions!!)
Roel Van de Paar
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Postfix error. 450 4.7.1 Client host rejected: cannot find your reverse hostname
Roel Van de Paar
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2:09
DevOps & SysAdmins: 450 4.7.1 Client host rejected: cannot find your hostname
Roel Van de Paar
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5:03
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