• If you are still using CentOS 7.9, it's time to convert to Alma 8 with the free centos2alma tool by Plesk or Plesk Migrator. Please let us know your experiences or concerns in this thread:
    CentOS2Alma discussion

Recent content by Pedro Magalhães

  1. P

    Question Undelivered Mail Returned to Sender gmail.com 550 5.7.1

    Dear Sirs, A few days ago, some messages sent to a mailbox with foward option return emails sended to domain gmail.com only. The message invoke "550-5.7.1 does not meet IPv6 sending guidelines regarding PTR records and 550-5.7.1 authentication. Please review 550-5.7.1" The Sender domain only...
  2. P

    Question Undelivered Mail Returned to Sender gmail.com 550 5.7.1

    Dear Sirs, A few days ago, some messages sent to a mailbox with foward option return emails sended to domain gmail.com only. The message invoke "550-5.7.1 does not meet IPv6 sending guidelines regarding PTR records and 550-5.7.1 authentication. Please review 550-5.7.1" The Sender domain only...
See more
Back
Top