|
|
Next: SMTP Authentication Up: Lecture 6 Previous: SMTP Service Extensions
SMTP Security
SMTP service extensions support
Transport layer security can be invoked as follows:
Client communicates subsequent SMTP requests using TLS (SSL).
RFC 2554 defines several SMTP service extensions for authentication.
Most widely used scheme solicits username and password in base64:
where base64 encoded strings mean:
| VXNlcm5hbWU6 | Username: |
| aHVtYmVydAo= | humbert |
| UGFzc3dvcmQ6 | Password: |
| UXVpbHR5Cg== | Quilty |
| Lecture 6 | XHTML 1.0 | Slide 5 |