Recent content by MariuszB

Slave DNS Manager stops adding new domains to slave servers. Connections and rndc key are correctly. When I try add domain or sync dns zone in panel log appears: [2026-06-24 14:33:52.362] 1709039:6a3bceb0508b2 ERR [panel] XML-RPC: Request is invalid. Error in line 1: Element 'site-name': This...

It's 6.10.1-10323

When I try to check security on WP Toolkit for all domain I get something like this: In panel log: I tried plesk reapir db and plesk repair installation without success.

I have no dovecot logrotate file. Logs are in maillog aggregated with postfix. I checked cron and I didn't find any suspected jobs which can reload dovecot. Here is my logrotate.d files:

I have dovecot logs in maillog but it's detail.

Memory is not an issue. I have 20-30 GB free on this server. I forgot write about it before. I have found something more in logs:

It didn't help. I have very high client limit now - 4000.

I made mail repair without success. Problem is still exists.

Unfortunately problem comes back. This is what I found in maillog:

I set default_vsz_limit to 1G. On status I didn't see any interesting entries.

Every day I receive alerts about imap server problem. Dovecot stops work for 2-3 minutes. In logs I have something like this: I don't know what is the problem source. Maybe too many connections etc.? Could you tell me how to debug this issue?

No errors in this log file. Today task manager have lower load about 50%. Maybe something big was to do.

Plesk task manager takes 100% all the time. I wonder how can I find why it's do that? psaadm 3358139 111 0.2 3083652 177736 ? Ssl 10:44 4:55 /usr/libexec/plesk-task-manager --config /usr/local/psa/admin/conf/task-manager.yml --data /var/lib/plesk/task-manager In longtask table I...

This is great answer. :) Conclusion is better to run many smaller servers (or VM) than a few big.

I would like to ask how many customers can I host on one server without issues. Let's assume that I have strong hardware like Epyc, much RAM and nvme storage. In this case can I host 100, 500, 1000 or more typical subscriptions with mail service? I'm wondering how much time server will do...