# An error has occurred **URL:** \ **Category:** Uncategorized\ **Created:** [August 20, 2024, 10:19pm UTC](https://forum.hestiacp.com/t/an-error-has-occurred/15576 "2024-08-20T22:19:35Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![ClaudioSpcSpa](https://forum.hestiacp.com/letter_avatar_proxy/v4/letter/c/8e8cbc/32.png) [@ClaudioSpcSpa](https://forum.hestiacp.com/u/ClaudioSpcSpa)\ **Post date:** [August 20, 2024, 10:19pm UTC](https://forum.hestiacp.com/t/an-error-has-occurred/15576/1 "2024-08-20T22:19:35Z")
An error has occurred SMTP Error (451): Could not set recipient “username@sample.cl” (Temporary local problem - please try later). ---
**Author:** ![Raphael](https://forum.hestiacp.com/user_avatar/forum.hestiacp.com/raphael/32/5217_2.png) [@Raphael](https://forum.hestiacp.com/u/Raphael)\ **Post date:** [August 21, 2024, 2:56am UTC](https://forum.hestiacp.com/t/an-error-has-occurred/15576/2 "2024-08-21T02:56:48Z")
We do not copy and paste only error messages here, please provide a minimal stack of informations… ---
**Author:** ![Deepak](https://forum.hestiacp.com/letter_avatar_proxy/v4/letter/d/7bcc69/32.png) [@Deepak](https://forum.hestiacp.com/u/Deepak)\ **Post date:** [August 21, 2024, 7:11am UTC](https://forum.hestiacp.com/t/an-error-has-occurred/15576/3 "2024-08-21T07:11:43Z")
@ClaudioSpcSpa > [@Raphael](#): > > provide a minimal stack of informations… Yes, @Raphael said very correct. The error you saw isn’t a standard error so that anyone could say where the problem is. So you will have to troubleshoot by yourselfg, or learn how to do so, and provide here all the information. If you want to learn how to troubleshoot, you can refer the following Guide published by Directadmin (I wish something like this is available also on HestiaCP for new comers): > **[Troubleshooting Exim | Directadmin Docs](https://docs.directadmin.com/other-hosting-services/exim/troubleshooting.html)** > > DirectAdmin Knowledge Base In particular, you should post here logs from the /var/log dir based on your troubleshooting attempts. Then, we can help you to come forward. However one remark: As you can determine, the error is a temporary one. It may have disappeared by now. But if this persists, you need to troubleshoot … ---
**Author:** ![ClaudioSpcSpa](https://forum.hestiacp.com/letter_avatar_proxy/v4/letter/c/8e8cbc/32.png) [@ClaudioSpcSpa](https://forum.hestiacp.com/u/ClaudioSpcSpa)\ **Post date:** [August 21, 2024, 11:27am UTC](https://forum.hestiacp.com/t/an-error-has-occurred/15576/4 "2024-08-21T11:27:22Z")
> [@ClaudioSpcSpa](#): > > An error has occurred > SMTP Error (451): Could not set recipient “username@sample.cl” (Temporary local problem - please try later). First of all, I apologize, it won’t happen again. The problem is that when I log in via webmail and try to send an email, that message appears. ---
**Author:** ![Deepak](https://forum.hestiacp.com/letter_avatar_proxy/v4/letter/d/7bcc69/32.png) [@Deepak](https://forum.hestiacp.com/u/Deepak)\ **Post date:** [August 21, 2024, 12:08pm UTC](https://forum.hestiacp.com/t/an-error-has-occurred/15576/5 "2024-08-21T12:08:38Z")
> [@ClaudioSpcSpa](#): > > when I log in via webmail Can you send emails outside of webmail? This is the first thing to check. If yes, we can work on other areas, where the problem could be. For checking this, you can use the information I have you above in link. ---
**Author:** ![ClaudioSpcSpa](https://forum.hestiacp.com/letter_avatar_proxy/v4/letter/c/8e8cbc/32.png) [@ClaudioSpcSpa](https://forum.hestiacp.com/u/ClaudioSpcSpa)\ **Post date:** [August 21, 2024, 12:43pm UTC](https://forum.hestiacp.com/t/an-error-has-occurred/15576/6 "2024-08-21T12:43:37Z")
First of all, thank you very much for the help. Mail sent from Gmail arrives immediately, Roundcube webmail does not send and the SMTP error (451) appears above. Nor does it reflect the recently sent mail. I was testing the link and it gives an error, which I don’t understand and there are too many lines to post here. On the other hand, and I think it is the most important thing that I had not said before, is that I have just updated the operating system, Debian 10 to Debian 11 and later to Debian 12. Could this be the reason for the problem? ---
**Author:** ![sahsanu](https://forum.hestiacp.com/user_avatar/forum.hestiacp.com/sahsanu/32/9318_2.png) [@sahsanu](https://forum.hestiacp.com/u/sahsanu)\ **Post date:** [August 21, 2024, 9:23pm UTC](https://forum.hestiacp.com/t/an-error-has-occurred/15576/7 "2024-08-21T21:23:31Z")
Fixed in this topic. > [@Upgrading Debian 10 Buster to Debian 11 Bullseye](https://forum.hestiacp.com/t/upgrading-debian-10-buster-to-debian-11-bullseye/15547/53): > > Just for the records. The mail issue is fixed. As @ClaudioSpcSpa wasn’t using neither clamav, spamassassin nor sieve, the fix has been easy: cp /usr/local/hestia/install/deb/exim/exim4.conf.4.95.template /etc/exim4/exim4.conf.template echo "$(head /dev/urandom | tr -dc A-Za-z0-9 | head -c16)" \> /etc/exim4/srs.conf chmod 640 /etc/exim4/srs.conf chown root:Debian-exim /etc/exim4/srs.conf systemctl restart exim4