Hi,
I'm using Exim 4.90.1 on an Ubuntu 18.04 machine with dovecot 2.2.33 as
IMAP server.
Currently, I'm also using a plugin in dovecot:
https://wiki.dovecot.org/Plugins/MailboxAlias
to make sure the users with different names for the Sent and Trash
folder ("Verzonden items", "Deleted Messages") see the same name between
different user agents.
However, this plugin solves the alias problem with a symlink in the
Maildir directory, which makes Exim count the mails twice when the
appendfile transport is calculating quota sizes.
I managed to grab part of an exim -d+all delivery when a user was over
quota:
10:50:48 18038 maildir_compute_size: path=/var/mail/virtual/cobergh.nl/cynthias.2097/Maildir/.Sent
10:50:48 18038 sum=2466048922 filecount=8701 timestamp=1644486536
[...]
10:50:48 18038 maildir_compute_size: path=/var/mail/virtual/cobergh.nl/cynthias.2097/Maildir/.Sent Messages
10:50:48 18038 sum=2466048922 filecount=13088 timestamp=1644486536
and sure enough, one of these directories is a symlink to the other:
root@mx-1:/var/spool/mail/virtual/cobergh.nl/cynthias.2097/Maildir# ls -asF | fgrep .Sent
4 .Sent/
0 .Sent Messages@
root@mx-1:/var/spool/mail/virtual/cobergh.nl/cynthias.2097/Maildir# stat .Sent\ Messages
File: .Sent Messages -> .Sent
Size: 5 Blocks: 0 IO Block: 4096 symbolic link
[...]
I was surprised by the symlink behaviour so I'm reconsidering the use of
the dovecot plugin, but I still wanted to ask whether this behaviour is
considered OK. I've read the appendfile docs and I could find anything
explicit about symlinks.
the transport part of the config:
virtual_delivery:
driver = appendfile
# let op: geen spatie voor de \ want dat wordt ".../Maildir "
directory = /var/mail/virtual/$domain/${sg{$local_part}{/}{-}}.${extract{user_id}{$address_data}}/Maildir\
${if bool{$acl_m_mailIsSpam}\
{${if match_domain{$acl_m_connectionDomainname}{+martin_domains}\
{}\
{/.Junk}\
}\
}\
{${if ! or{ {eq{$address_file}{}} {eq{$address_file}{inbox}}}\
{/.${sg{$address_file}{/}{-}}}\
{}\
}\
}\
}
directory_mode = 2750
mode = 0640
user = ${extract{uid}{$address_data}}
group = mail
maildir_tag = ",S=$message_size,W=$message_size"
headers_remove = Lines:Content-Length:Status:X-IMAP:X-IMAPbase:X-Keywords:X-Status:X-UID:X-UIDL
headers_add = "Lines: $body_linecount"
use_crlf
maildir_format
create_directory
delivery_date_add
envelope_to_add
return_path_add
#quota opties
quota = ${extract{quotum}{$address_data}}
quota_size_regex = S=(\d+)
quota_is_inclusive = false
maildir_quota_directory_regex = ^(?:cur|new|\.(?!Trash).*)$
quota_warn_threshold = 95%
quota_warn_message = MSG_QUOTA
maildir_use_size_file
thanks,
Maarten.
