Qué (quién) es rfc:821">rfc:821 - definición
YEAR
821 (year); Year 821; AD 821; 821 CE; 821 AD; Events in 821; Births in 821; Deaths in 821
![[[Thomas the Slav]] captures cities in [[Anatolia]]](https://commons.wikimedia.org/wiki/Special:FilePath/MadridSkylitzesFol30vDetail.jpg?width=200 "[[Thomas the Slav]] captures cities in [[Anatolia]]")
IAR-821
AGRICULTURAL AIRCRAFT
ICA-Brasov IAR-821; I.A.R.-821; IAR 821
The IAR-821 was an agricultural aircraft built in Romania in the 1960s. It was a conventional low-wing monoplane with fixed, tailwheel undercarriage.
Socimi Type 821
SUBMACHINE GUN
Socimi 821
The Socimi Type 821-SMG was a submachine gun manufactured in the 1980s by the firm of SOCIMI, Società Costruzioni Industriali Milano, SpA located in Milan, Italy.
RFC 821
INTERNET PROTOCOL USED FOR RELAYING E-MAILS
SMTP; Simple mail transport protocol; Simple mail transfer protocol; ESMTP; ETRN; Extended SMTP; EHLO; SMTP extension; Smtp; 8BITMIME; SMTP greeting; Smtp greeting; Esmtp; Mail protocol; Bsmtp; SMTP server; Smtp server; SMTP protocol; Port 587; Mail Transfer Protocol; E-mail structure; Mail stop code; Secure SMTP; Port 25; ASMTP; RFC 821; RFC 2821; Simple Mail Transport Protocol; RFC2821; RFC 5321; TCP port 25; SMTPUTF8; SMTP MTA Strict Transport Security; MTA-STS
<messaging, standard> The original RFC defining SMTP.
Updated by RFC 2821.
rfc:821">rfc:821.
(2007-06-01)
Wikipedia
821
Year 821 (DCCCXXI) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar.
