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      host map: lookup (domain.com): deferred

      This was another issue happened several days ago.In our email configuration, there was one central email server to sent email out and all other servers transferred email to this central email serv...
      NeilZhang 17/04/2018Linux1,798 viewsCommentssendmail
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      IP name possibly forged

      These days got a sendmail issue and fixed it after some research and tests, and I though it could be shared here.The primary email server was 192.168.3.40 and was used as relay server to send emai...
      NeilZhang 16/04/2018Linux263 viewsCommentssendmail
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