Booked a flight yesterday eve. Got two eMails, the later one of which says "Your e-ticket is attached". In that eMail, i find two documents, in one it simply says "Payment overview". The other one does contain same "Booking number", an "E-ticket number" and "Online Checkin (sic) number". Tried all those numbers on Netflights.com and similar sites with output "Sorry, we were unable to find your booking" and similar. The "Checkin" number is not the usual format starting with an "N" or "BND/". On the airline's site, the booking is also not found, it outputs just details to their call center for trouble-shooting
Will try to update this, should a correct booking reference be supplied.
EDIT: Not sure why Vayama was unable to provide usable documentation, or if this just a problem with usual lookup sites and/or my airline's web info. Anyways, the airline customer service confirmed the e-ticket number is legit and sent me proper e-ticket pdf's by eMail today. Rating upgraded from 1 to 4 stars.