bounde
用户错误
said: 550 Invalid User
said: 550Recipient unknown
said: 550 #2175041 unavailable mail user (
said: 503 RCPT account isn't a local account me
 said: 550 5.7.1 Requested action not taken
said: 501 Bad address syntax
 said: 550 No such user
 said: 550 5.1.1 Mailbox <morgan_yun@yenfen.com> does not exist
said: 550 wrbaby@263.net:user locked
 said: 551 5.1.1 User not found
said: 550 mailbox not found
said: 550 RC:LD The email account that you tried to reach does no exists
 said: 550 the account is disable
 said: 550 5.1.1 <gglegend@pku.edu.cn>: Recipient address rejected:
said: 550 Recipient Rejected: No account
 said: 550 5.2.1 RACT 124.254.8.171: Mailbox is inactive:
said: 552 liuli@whsloa.com mailbox full
 said: 550 th@whsloa.com is absent.
said: 550 Invalid User:
said: 550 Mailbox unavailable or access denied
 said: 550 Invalid recipient
said: 554 Invalid recipient
 said: 550 mailbox ylzp@yili.com unavailable
said: 550 not local host 主机不提供收件
 said: 553 This target address is not our MX service client
said: 550 User suspended:
 said: 511 sorry, no mailbox here
said: 550 cuda_nsu No inbox for
 said: 550 5.7.1 Unable to relay for
said: 501 #5.1.3 8-bit character in username
said: 550 No such person at this address
said: 553 sorry, no mailbox here
 said: 552 Mailbox is full
said: 550 nonexistent local account
 said: 550 the rcpt account is invalid
said: 554 5.7.1 <dtlzqr@zitiz.net>: Recipient address rejected: User unknown
 said: 553 sorry, invalid user
said: 550 yuhe@hjchem.com is absent.
 said: 553 mailbox not found
said: 550:user not exist
said: 550mailbox unavailable
said: 554 user doesn't have a yahoo.com account
said: 554 This account has been disabled or discontinued
 said: 550 User not found:
 
主机错误
said: 500 5.0.0 Service unavailable
 said: 501 Syntax error in parameters or arguments
 said: 503 AUTH first
said: 553 sorry, that domain isn't in my list of allowed rcpthosts
 said: 550 Local user only or Authentication mechanism
said: 550 ??????????????????(service stop)
 said: 500 5.0.0 Service unavailable
said: 554 delivery error 554 Transaction failed
said: 501 Bad address syntax


拒绝
 said: 551 Server access forbidden by your IP
said: 553 5.7.3 CONTENT REJECT:
 said: 553 RP:RDN
 said: 553 5.7.0 IP REJECT:
said: 554 Relay access denied
said: 550 Relaying mail to tom.yang@yydg.com.cn is not allowed
 said: 554 5.7.1 <qyc@yurun.com.cn>: Recipient address rejected: blocked using
 said: 550 sorry, no mailbox
 said: 552 RP:UQT
 said: 553 this mail is blocked
said: 550 unknown user
said: 550 Does not like recipient,your mail is rejected
said: 550 relaying denied
 said: 554 rejecting banned content
said: 553 Relay restriction, by relayres.ini.
 said: 554 Sorry, message looks like SPAM to me
said: 513 Relaying denied
 said: 553 5.7.1 SENDER REJECT
said: 501 5.7.1 <service_jgzz@myhrd.cn>... Sender refused by the DNSBL
said: 550 Address rejected