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luchris

  • Apr 14, 2024
  • Joined Apr 12, 2023
  • 14 discussions
  • 51 posts
  • 4 best answers
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  • Yes, login to the Mailcow UI as admin , navigate to System -> Configuration -> Options -> Fail2ban parameters and scroll to the bottom

    • I installed Mailcow server, It is sending out messages well to gmail. But when I try to send from gmail to the mail, gmail returns an error.
      554 5.7.1 <>: Relay access denied

      I have tried to edit the main.cf file in the postfix folder to
      smtpd_recipient_restrictions = check_recipient_mx_access proxy:mysql:/opt/postfix/conf/sql/mysql_mbr_access_maps.cf,
      permit_sasl_authenticated,
      permit_mynetworks,
      check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf

      removed
      reject_invalid_helo_hostname,
      reject_unauth_destination

      smtpd_sender_restrictions = reject_authenticated_sender_login_mismatch,
      permit_mynetworks,
      permit_sasl_authenticated

      rremoved
      reject_unlisted_sender,
      reject_unknown_sender_domain

      But it didn’t cause any change as the mail still fails. Please what do I do here ?

    • boohoomoo So I take it, if I remove the “another domain” as a normal domain from mailcow, I will be able to add it as an alias domain?

      Yes, the alias domain has to point to your mailcow via DNS, but you don’t actually configure it as a domain in mailcow, because then you would have independent accounts.
      If you configure it as an domain alias the users can choose which domain to create a temporary address for in the Mailcow UI without needing them to give any administrator rights.

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        • Best Answerset by luchris

        You may install pflogsumm