Getting Error 451 4.3.0

Impacted versions

• OS Type: Ubuntu 20.04.3 LTS
• OS Version: 20.04.3
• Database Type: PostgreSQL
• Database version: 12.8
• Modoboa: 1.17.0
• installer used: Yes
• Webserver: Nginx

Steps to reproduce

Try to send an email as any valid user via a client to any valid address (hosted by this server or otherwise), and an error appears on Thunderbird and Clawsmail.

Try to send an email via the webmail client, and the email appears to be sending.

Current behavior

Inbound email has been inconsistent. Most recent tests seem to work fine.

Sending via a client results in an error:

** error occurred on SMTP session
*** Error occurred while sending the message:
451 4.3.5 <[e-mail]>: Recipient address rejected: Server configuration problem

On /var/log/mail.log when sending email from valid address outbound.

Aug 18 21:58:11 xm1 postfix/submission/smtpd[3410]: warning: problem talking to server 127.0.0.1:9999: Success
Aug 18 21:58:11 xm1 postfix/submission/smtpd[3410]: NOQUEUE: reject: RCPT from reverse-ip[11.111.111.11]: 451 4.3.5 <[e-mail]>: Recipient address rejected: Server configuration problem; from=<[e-mail]> to=<[e-mail]> proto=ESMTP helo=<localhost>

Expected behavior

Mail is queued and sent properly to other mailbox or outside service.

[vedrafal]

Have you seen the last reply to this post? It worked for me. My Python was on 3.8 already so check your folder path.

https://github.com/modoboa/modoboa/issues/2200#issuecomment-897495315

Here is the reason of the problem: ray-project/ray#17475 So delete all aioredis packages here : /srv/modoboa/env/lib/python3.7/site-packages And install the version 1.3.1 with this command: pip3 install -Iv aioredis==1.3.1 --target=/srv/modoboa/env/lib/python3.7/site-packages Reboot your server and the problem will be solved.

[sissieadmin]

I was able to resolve this issue by essentially running a reinstall of modoboa on top of the existing one (not removing any packages prior but repulling the git and running the build).

It was pita, in that I had to correct every password for postgres, etc., in the configs. But it started working okay once I was done digging through every service config looking for passwords to correct.

On October 22, 2021 7:23:51 PM PDT, “stale[bot]” @.***> wrote:

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.

– You are receiving this because you authored the thread. Reply to this email directly or view it on GitHub: https://github.com/modoboa/modoboa/issues/2342#issuecomment-950042625 – Sent from my Android device with K-9 Mail. Please excuse my brevity.