The file is embedded in the mail message. So if you have a 5mb attachment, depending on the encoding, you'll have at least a 5mb email message. Attachment limits are probably used to conserve HD space.
depends on server implementation =/
from the 2 I've seen, each folder represents a user account, and the filename of each email is a timestamp, e.x.: 20050517134556.eml
I thought it was done the same way you see attachments on things in UseNet. It is a Mime block of data with a header and footer. The header specifies the mime type and file name. This is all theory - but it would make sense.
Attachments are encoded either as UUENCODE (old method, not as common these days), or as MIME. Both encodings take an 8-bit binary stream and convert it into a valid 7-bit stream as per the relevant RFC (IIRC RFC 822)
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.