…r base64. For 8-bit clean transport (e.g., 8BITMIME ESMTP [ RFC6152 ] or NNTP [ RFC3977 ]), 7bit or 8bit data, for example, US-ASCII or UTF-8 data, does not require content-transfer-encoding, but binary data, for example, data with a UTF-16 encoding, MUST be content- transfer-enc…
… IRC 0x69 0x72 0x63 ("irc") RFC1459 NNTP (reading) 0x6E 0x6E 0x74 0x70 ("nntp") RFC3977 NNTP (transit) 0x6E 0x6E 0x73 0x70 ("nnsp") RFC3977 DoQ 0x64 0x6F 0x71 ("doq") RFC9250 SIP 0x73 0x69 0x70 0x2f 0x32 ("sip/2") RFC3261 TDS/8.0 0x74 0x64 0x73 0x2f 0x38 0x2e 0x30 ("tds/8.0") [MS…
…1 ] Latest-Delivery-Time mail [ RFC4021 ] Lines netnews deprecated [ RFC5536 ][ RFC3977 ] List-Archive mail [ RFC4021 ] List-Help mail [ RFC4021 ] List-ID mail [ RFC4021 ] List-Owner mail [ RFC4021 ] List-Post mail [ RFC4021 ] List-Subscribe mail [ RFC4021 ] List-Unsubscribe perm…
…l RFC4021 Latest-Delivery-Time mail RFC4021 Lines netnews deprecated RFC5536 ][ RFC3977 List-Archive mail RFC4021 List-Help mail RFC4021 List-ID mail RFC4021 List-Owner mail RFC4021 List-Post mail RFC4021 List-Subscribe mail RFC4021 List-Unsubscribe perm/list-unsubscribe mail RFC…
…l RFC4021 Latest-Delivery-Time mail RFC4021 Lines netnews deprecated RFC5536 ][ RFC3977 List-Archive mail RFC4021 List-Help mail RFC4021 List-ID mail RFC4021 List-Owner mail RFC4021 List-Post mail RFC4021 List-Subscribe mail RFC4021 List-Unsubscribe perm/list-unsubscribe mail RFC…
…l RFC4021 Latest-Delivery-Time mail RFC4021 Lines netnews deprecated RFC5536 ][ RFC3977 List-Archive mail RFC4021 List-Help mail RFC4021 List-ID mail RFC4021 List-Owner mail RFC4021 List-Post mail RFC4021 List-Subscribe mail RFC4021 List-Unsubscribe perm/list-unsubscribe mail RFC…