RFC 7504 on SMTP 521 and 556 Reply CodesRFC 7504 on SMTP 521 and 556 Reply Codes
rfc-editor
2015-06-30
ietf-announce
None
/arch/msg/ietf-announce/xFR3CFsigdcqg__pmUpby7g0_e8/
2044130
1364457
[rfc-dist] RFC 7504 on SMTP 521 and 556 Reply Codes[rfc-dist] RFC 7504 on SMTP 521 and 556 Reply Codes
rfc-editor at rfc-editor.org
2015-06-30
rfc-dist
None
/arch/msg/rfc-dist/4v-Na7NlWJStngMJjy2lIrwtK8U/
2274420
1568717