[GH-ISSUE #2311] SMTP error 554 5.7.1 "Client host rejected: Access denied #1568

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opened 2026-02-27 11:17:51 +03:00 by kerem · 4 comments
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Originally created by @7838099724 on GitHub (Jul 4, 2021).
Original GitHub issue: https://github.com/modoboa/modoboa/issues/2311

Hello I've Installed modoboa via installer everything is working fine but when I need to configure smtp pop 3 to configure emails in outlook and thunderbird. To enable smtp I followed this tutorial https://www.linuxbabe.com/mail-server/enable-smtps-port-465-postfix. after doing everything Mails are not going by thunderbird and not able to configure in outlook

Originally created by @7838099724 on GitHub (Jul 4, 2021). Original GitHub issue: https://github.com/modoboa/modoboa/issues/2311 Hello I've Installed modoboa via installer everything is working fine but when I need to configure smtp pop 3 to configure emails in outlook and thunderbird. To enable smtp I followed this tutorial https://www.linuxbabe.com/mail-server/enable-smtps-port-465-postfix. after doing everything Mails are not going by thunderbird and not able to configure in outlook
kerem 2026-02-27 11:17:51 +03:00
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@7838099724 commented on GitHub (Jul 4, 2021):

Mails are receiving in thurnderbird but when I am trying to send then
I’m getting this error in log file

Jul 4 10:18:29 mail postfix/submission/smtpd[2960795]: connect from unknown[47.15.240.42]
Jul 4 10:18:29 mail postfix/submission/smtpd[2960795]: warning: connect to Milter service inet:127.0.0.1:12345: Connection refused
Jul 4 10:18:31 mail postfix/submission/smtpd[2960795]: Anonymous TLS connection established from unknown[47.15.240.42]: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (2048 bits) server-digest SHA256
Jul 4 10:18:32 mail postfix/submission/smtpd[2960795]: NOQUEUE: reject: RCPT from unknown[47.15.240.42]: 554 5.7.1 <unknown[47.15.240.42]>: Client host rejected: Access denied; from=<> to=<> proto=ESMTP helo=<[192.168.43.87]>

<!-- gh-comment-id:873546676 --> @7838099724 commented on GitHub (Jul 4, 2021): Mails are receiving in thurnderbird but when I am trying to send then I’m getting this error in log file Jul 4 10:18:29 mail postfix/submission/smtpd[2960795]: connect from unknown[47.15.240.42] Jul 4 10:18:29 mail postfix/submission/smtpd[2960795]: warning: connect to Milter service inet:127.0.0.1:12345: Connection refused Jul 4 10:18:31 mail postfix/submission/smtpd[2960795]: Anonymous TLS connection established from unknown[47.15.240.42]: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (2048 bits) server-digest SHA256 Jul 4 10:18:32 mail postfix/submission/smtpd[2960795]: NOQUEUE: reject: RCPT from unknown[47.15.240.42]: 554 5.7.1 <unknown[47.15.240.42]>: Client host rejected: Access denied; from=<> to=<> proto=ESMTP helo=<[192.168.43.87]>
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@tonioo commented on GitHub (Jul 5, 2021):

Looks like opendkim is not started, can you check that?

<!-- gh-comment-id:873879149 --> @tonioo commented on GitHub (Jul 5, 2021): Looks like opendkim is not started, can you check that?
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@stale[bot] commented on GitHub (Sep 20, 2021):

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

<!-- gh-comment-id:923438387 --> @stale[bot] commented on GitHub (Sep 20, 2021): This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.
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@stale[bot] commented on GitHub (Nov 22, 2021):

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

<!-- gh-comment-id:975891473 --> @stale[bot] commented on GitHub (Nov 22, 2021): This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.
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starred/modoboa-modoboa#1568
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