etc/dovecot/transport

   1 dovecot.heureux-cyclage.org lmtp:unix:private/dovecot-lmtp
   2 dovecot.cyclocoop.org       lmtp:unix:private/dovecot-lmtp
   3 dovecot.ptitvelo.net        lmtp:unix:private/dovecot-lmtp
   4 dovecot.veli-velo.org       lmtp:unix:private/dovecot-lmtp