Re: [exim] 550 on mailbox full

>rcpt_chk_quota:
>  # OK if no local deliveries
>  require       set acl_c7 =    1000M
>                set acl_c5 =    0
>  accept        condition =     ${if !match {$acl_c9}{/(,|\$)}}

>  # Get the deliver directory
>  require       set acl_c8 =    ${sg {$acl_c9} {([^/],)*(.*/(,|\$))} {\$2}}
>  require       set acl_c8 =    ${sg {$acl_c8} {(.*/Maildir/).*\$} {\$1}}
>  # If it doesn't exist either it's never been created or
>  # we're on a 2MX.  Check the DB for an over-quota flag.
>  accept        condition =     ${if !exists{$acl_c8}}
>                acl =           quota_db_flag
>  # Get the path to the maildirsize file; if it's not present then either it's
>  # never been created, it's been temporarily deleted.
>  accept        condition =     ${if !exists{${acl_c8}maildirsize}}
>                acl =           quota_longform
>  # read the size file
>  require       set acl_c8 =    ${readfile{${acl_c8}maildirsize}{!}}
>  # empty first line means infinite quota
>  accept        condition =     ${if match {$acl_c8}{^\\s*(!.*)?\$}}
>                set acl_c7 =    0
>  # quota: first line, first number
>  require       set acl_c7 =    ${sg {$acl_c8} {^(\\s*)(\\d+).*\$} {\$2}}
>  # zero means infinite quota
>  accept        condition =     ${if = {$acl_c7}{0}}
>  # drop the first line
>  warn          set acl_c8 =    ${sg {$acl_c8}{^[^!]*!(.*)\$} {\$1}}
>  # convert 2nd number & linebreak into addition, on each line
>                set acl_c8 =    ${sg {$acl_c8}{\\s*(-?\\d+)[^!]*!?} {\$1 +}}
>  # evaluate the sum (and leave around for the data-time check)
>                set acl_c5 =    ${eval:$acl_c8 +0}
>  # add this message (10k default if no SIZE=)
>                set acl_c8 =    ${eval:$acl_c5 + ${if < {$message_size}{0} \
>                                        {10K} {$message_size}}}
>  # ok if within quota
>  accept        acl =           acl_chk_quota
>  # might have deferred there, or denied.