Hi berni.
1. ... i use wireshark to watch the traffic, i am surprised that it showed 0.5 MB/s for 11 second ... is there any problem with my server or my server have attacked by virus or somethingelse ?? (i did check the var/log/maillog no errors, no spam)
Or did the ldap backend require much more greater server specification as the number of user raises ??
if i have login in to mail account everything loaded normally (loading time)
*) So, it happens on Roundcube webmail Login page, right? Did you try (HTML) source code of Roundcube Login page? any difference/strange/weird?
*) There's no difference with either backend (OpenLDAP, MySQL, PostgreSQL). Roundcube is a standalone web application.
2. where is the location of mail queue and the blocked incoming mail (both detected spam and quarantine) ?? i think i need to clear that incoming mail. if the spam arrives to the users mail than so be it. its ok. i just wonder where is the destination inbox (temporary inbox maybe) except to the users inbox ??
*) Postfix mail queue is /var/spool/postfix/ by default. WARNING: It's not recommended to manage files under Postfix mail queue manually (rm, cp, etc), please use Postfix built-in tools instead (postqueue, postsuper, etc).
*) If you config Amavisd to quarantine SPAM/VIRUS, it will be quarantined to file system (/var/spool/amavisd/, on RHEL/CentOS) by default. But if you configure to quarantine them to SQL database by following our wiki tutorial, it will be quarantined to SQL db instead, you can manage quarantined emails with iRedAdmin-Pro.
Reference: http://iredmail.org/wiki/index.php?titl … ining.SPAM
3. how can i maintain to maintenance my iredmail mailserver ?? like antivirus, control and protecting from open relay
*) For anti-virus, please just keep "freshclam" daemon running. You can find script under /etc/init.d/.
*) iRedMail is not an open relay by default.