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5.7.1 smtp;550 5.7.1 Client host rejected: cannot find your hostname, [xxx.x.xxx.98] RRS feed

  • 问题

  • I have  read carefully the other versions of this question which all point to rdns ptr records.  But I have three rdns ptr records for the firewall external ip address[public ip is xxx.x.xxx.98] which resolves to mail's mydomainname.com. We have a public MX record for mail1.mydomainname.com, which resolves the name mail.mydomainname.com to xxx.x.xxx.102. yet for some unkown reason I send email to xxx@tourismarketing.de are failed. Our mail server reply me:we have trouble to send email to your mail address,the error message:5.7.1 smtp;550 5.7.1 Client host rejected: cannot find your hostname, [xxx.x.xxx.98].I can send email to hotmail,aol and other mail server success.
    2012年8月24日 8:11

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