| List name | Post address | Description |
|---|---|---|
| xml2rfc | xml2rfc@ietf.org | XML2RFC discussion list |
| xmpp | xmpp@ietf.org | XMPP Working Group |
| yam | yam@ietf.org | Yet Another Mail working group discussion list |
| yang-doctors | yang-doctors@ietf.org | Email list of the yang-doctors directorate |
| Yang-multicast | yang-multicast@ietf.org | YANG Multicast |
| Yang-sid-logistics | yang-sid-logistics@ietf.org | Communication facilitating the logistics of handling YANG SIDs (RFC 9595) in IANA registration and RFC Production Center processes |