Microsoft Server

SMTP Reply

SMTP

Merhaba;

Mail sunucularınızı telnet ile test etmek için gerekli çalışmayı yaparken karşılaştığımız Code’lar vardır.

Bunlardan bazıları

Code

Meaning

200(nonstandard success response, see rfc876)
211System status, or system help reply
214Help message
220<domain> Service ready
221<domain> Service closing transmission channel
250Requested mail action okay, completed
251User not local; will forward to <forward-path>
354Start mail input; end with <CRLF>.<CRLF>
421<domain> Service not available, closing transmission channel
450Requested mail action not taken: mailbox unavailable
451Requested action aborted: local error in processing
452Requested action not taken: insufficient system storage
500Syntax error, command unrecognised
501Syntax error in parameters or arguments
502Command not implemented
503Bad sequence of commands
504Command parameter not implemented
521<domain> does not accept mail (see rfc1846)
530Access denied (???a Sendmailism)
550Requested action not taken: mailbox unavailable
551User not local; please try <forward-path>
552Requested mail action aborted: exceeded storage allocation
553Requested action not taken: mailbox name not allowed
554Transaction failed

 

Reply codes grouped by command

Command

Code

Description

CONNECT  
 220<domain> Service ready
 421<domain> Service not available, closing transmission channel
HELO  
 250Requested mail action okay, completed
 500Syntax error, command unrecognised
 501Syntax error in parameters or arguments
 504Command parameter not implemented
 521<domain> does not accept mail [rfc1846]
 421<domain> Service not available, closing transmission channel
EHLO  
 250Requested mail action okay, completed
 550Not implemented
 500Syntax error, command unrecognised
 501Syntax error in parameters or arguments
 504Command parameter not implemented
 421<domain> Service not available, closing transmission channel
MAIL  
 250Requested mail action okay, completed
 552Requested mail action aborted: exceeded storage allocation
 451Requested action aborted: local error in processing
 452Requested action not taken: insufficient system storage
 500Syntax error, command unrecognised
 501Syntax error in parameters or arguments
 421<domain> Service not available, closing transmission channel
RCPT  
 250Requested mail action okay, completed
 251User not local; will forward to <forward-path>
 550Requested action not taken: mailbox unavailable
 551User not local; please try <forward-path>
 552Requested mail action aborted: exceeded storage allocation
 553Requested action not taken: mailbox name not allowed
 450Requested mail action not taken: mailbox unavailable
 451Requested action aborted: local error in processing
 452Requested action not taken: insufficient system storage
 500Syntax error, command unrecognised
 501Syntax error in parameters or arguments
 503Bad sequence of commands
 521<domain> does not accept mail [rfc1846]
 421<domain> Service not available, closing transmission channel
DATA  
 354Start mail input; end with <CRLF>.<CRLF>
 451Requested action aborted: local error in processing
 554Transaction failed
 500Syntax error, command unrecognised
 501Syntax error in parameters or arguments
 503Bad sequence of commands
 421<domain> Service not available, closing transmission channel
received data  
 250Requested mail action okay, completed
 552Requested mail action aborted: exceeded storage allocation
 554Transaction failed
 451Requested action aborted: local error in processing
 452Requested action not taken: insufficient system storage
RSET  
 200(nonstandard success response, see rfc876)
 250Requested mail action okay, completed
 500Syntax error, command unrecognised
 501Syntax error in parameters or arguments
 504Command parameter not implemented
 421<domain> Service not available, closing transmission channel
SEND  
 250Requested mail action okay, completed
 552Requested mail action aborted: exceeded storage allocation
 451Requested action aborted: local error in processing
 452Requested action not taken: insufficient system storage
 500Syntax error, command unrecognised
 501Syntax error in parameters or arguments
 502Command not implemented
 421<domain> Service not available, closing transmission channel
SOML  
 250Requested mail action okay, completed
 552Requested mail action aborted: exceeded storage allocation
 451Requested action aborted: local error in processing
 452Requested action not taken: insufficient system storage
 500Syntax error, command unrecognised
 501Syntax error in parameters or arguments
 502Command not implemented
 421<domain> Service not available, closing transmission channel
SAML  
 250Requested mail action okay, completed
 552Requested mail action aborted: exceeded storage allocation
 451Requested action aborted: local error in processing
 452Requested action not taken: insufficient system storage
 500Syntax error, command unrecognised
 501Syntax error in parameters or arguments
 502Command not implemented
 421<domain> Service not available, closing transmission channel
VRFY  
 250Requested mail action okay, completed
 251User not local; will forward to <forward-path>
 550Requested action not taken: mailbox unavailable
 551User not local; please try <forward-path>
 553Requested action not taken: mailbox name not allowed
 500Syntax error, command unrecognised
 501Syntax error in parameters or arguments
 502Command not implemented
 504Command parameter not implemented
 421<domain> Service not available, closing transmission channel
EXPN  
 250Requested mail action okay, completed
 550Requested action not taken: mailbox unavailable
 500Syntax error, command unrecognised
 501Syntax error in parameters or arguments
 502Command not implemented
 504Command parameter not implemented
 421<domain> Service not available, closing transmission channel
HELP  
 211System status, or system help reply
 214Help message
 500Syntax error, command unrecognised
 501Syntax error in parameters or arguments
 502Command not implemented
 504Command parameter not implemented
 421<domain> Service not available, closing transmission channel
NOOP  
 200(nonstandard success response, see rfc876)
 250Requested mail action okay, completed
 500Syntax error, command unrecognised
 421<domain> Service not available, closing transmission channel
QUIT  
 221<domain> Service closing transmission channel
 500Syntax error, command unrecognised
TURN  
 250Requested mail action okay, completed
 502Command not implemented
 500Syntax error, command unrecognised
 503Bad sequence of commands

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Kerem Şuğle

Solution Architect, VMware vExpert ve Microsoft sertifikalı altyapı uzmanı. VMware vSphere/vSAN/VCF, Azure, AWS, Google Cloud, enterprise sanallaştırma ve yapay zeka konularında 15+ yıl deneyim. AI/cloud dönüşümü, sovereign cloud, enterprise güvenlik ve modern altyapı mimarisi alanlarında yazıyor.

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