Bug#595781: About /var/run/cyrus/socket/lmtp and chroot

[Francis Russell]

Javier Barroso wrote:

> Could we add a third instructions like this:
> 
> 3. Change in /etc/postfix/master.cf lmtp chroot column to 'n'
> lmtp      unix  -       -       n       -       -       lmtp
> 
> If this step is not made, "No such file or directory" will be showed in
> logs (about /var/run/cyrus/socket/lmtp)

I noticed this bug from the mailing list. That instruction assumes that
the user's *only* choice is to move lmtp service out of the chroot.

Instead, they might want to add something this to cyrus.conf:

lmtpchroot      cmd="lmtpd"
listen="/var/spool/postfix/local/socket/lmtp" prefork=0 maxchild=20

and create the appropriate folders to enable cyrus to create another
socket inside the postfix chroot. Then they would just need to enable
postfix to find the socket:

virtual_transport = lmtp:unix:local/socket/lmtp

and the lmtp service remains chrooted.

Francis