Wer kein IPv6 verwendet, aber trotzdem Mailcow verwenden möchte, kommt rasch an seine Grenzen. Den PHP FPM Container lassen die Einträge "ENABLE_IPV6=false" und "SKIP_IPV6" in der mailcow.conf kalt. Hier muss händisch eingegriffen werden.
/opt/mailcow-dockerized/data/conf/phpfpm/php-fpm.d/pools.conf
[system-worker]
user = www-data
group = www-data
pm = dynamic
pm.max_children = 15
pm.start_servers = 2
pm.min_spare_servers = 2
pm.max_spare_servers = 4
listen = 0.0.0.0:9001
access.log = /proc/self/fd/2
clear_env = no
catch_workers_output = yes
php_admin_value[memory_limit] = 256M
php_admin_value[disable_functions] = show_source, highlight_file, apache_child_terminate, apache_get_modules, apache_note, apache_setenv, virtual, dl, disk_total_space, posix_getpwnam, posix_getpwuid, posix_mkfifo, posix_mknod, posix_setpgid, posix_setsid, posix_setuid, posix_uname, proc_nice, openlog, syslog, pfsockopen, system, shell_exec, passthru, popen, proc_open, exec, ini_alter, pcntl_exec, proc_close, proc_get_status, proc_terminate, symlink
[web-worker]
user = www-data
group = www-data
pm = dynamic
pm.max_children = 50
pm.start_servers = 10
pm.min_spare_servers = 10
pm.max_spare_servers = 15
listen = 0.0.0.0:9002
access.log = /proc/self/fd/2
clear_env = no
catch_workers_output = yes
php_admin_value[memory_limit] = 512M
php_admin_value[disable_functions] = show_source, highlight_file, apache_child_terminate, apache_get_modules, apache_note, apache_setenv, virtual, dl, disk_total_space, posix_getpwnam, posix_getpwuid, posix_mkfifo, posix_mknod, posix_setpgid, posix_setsid, posix_setuid, posix_uname, proc_nice, openlog, syslog, pfsockopen, system, shell_exec, passthru, popen, proc_open, exec, ini_alter, pcntl_exec, proc_close, proc_get_status, proc_terminate, symlink
Die fettmarkierten Einträge sind im IPv6 Format eingetragen. Diese bitte wie oben abändern. Dann klappts auch ohne V6.