此 MCP 可以做什么
Checks domain email deliverability through MX, SPF, DKIM, DMARC, DNS health, SMTP probing, and blacklist status.
功能
工具
6
工具
check_blacklist
Check blacklists
Check whether the domain and its mail server IPs are listed on the Spamhaus (ZEN, DBL, ZRD, AuthBL), SpamCop, GBUdb and PSBL blocklists.
只读
可访问外部资源
输入模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['domain'], 'properties': {'domain': {'type': 'string', 'maxLength': 253, 'minLength': 1, 'description': 'The domain to check, e.g. example.com. No scheme or path.'}}}
输出模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['domain'], 'properties': {'grade': {'type': 'string'}, 'score': {'type': 'number'}, 'checks': {'type': 'array', 'items': {'type': 'object', 'required': ['id', 'status', 'message'], 'properties': {'id': {'type': 'string'}, 'rfc': {'anyOf': [{'type': 'string'}, {'type': 'null'}]}, 'status': {'type': 'string'}, 'details': {'anyOf': [{}, {'type': 'null'}]}, 'message': {'type': 'string'}, 'section': {'type': 'string'}, 'severity': {'type': 'string'}}, 'additionalProperties': False}}, 'domain': {'type': 'string'}, 'provider': {'anyOf': [{'type': 'string'}, {'type': 'null'}]}, 'sections': {'type': 'object', 'propertyNames': {'type': 'string'}, 'additionalProperties': {'type': 'object', 'required': ['score', 'grade'], 'properties': {'grade': {'type': 'string'}, 'score': {'type': 'number'}}, 'additionalProperties': False}}, 'selector': {'type': 'string'}, 'permalink': {'type': 'string'}, 'smtp_note': {'type': 'string'}, 'created_at': {'type': 'number'}, 'expires_at': {'type': 'number'}, 'updated_at': {'type': 'number'}, 'smtp_status': {'type': 'string'}, 'poll_after_seconds': {'type': 'number'}}, 'additionalProperties': False}
check_dkim
Check DKIM
Check DKIM signing keys for a domain. Without a selector, common provider selectors are probed. Pass an explicit selector to look up that exact key at selector._domainkey.
只读
可访问外部资源
输入模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['domain'], 'properties': {'domain': {'type': 'string', 'maxLength': 253, 'minLength': 1, 'description': 'The domain to check, e.g. example.com. No scheme or path.'}, 'selector': {'type': 'string', 'pattern': '^[a-z0-9_.-]+$', 'maxLength': 63, 'description': 'An explicit DKIM selector to look up (e.g. "google", "s1").'}}}
输出模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['domain'], 'properties': {'grade': {'type': 'string'}, 'score': {'type': 'number'}, 'checks': {'type': 'array', 'items': {'type': 'object', 'required': ['id', 'status', 'message'], 'properties': {'id': {'type': 'string'}, 'rfc': {'anyOf': [{'type': 'string'}, {'type': 'null'}]}, 'status': {'type': 'string'}, 'details': {'anyOf': [{}, {'type': 'null'}]}, 'message': {'type': 'string'}, 'section': {'type': 'string'}, 'severity': {'type': 'string'}}, 'additionalProperties': False}}, 'domain': {'type': 'string'}, 'provider': {'anyOf': [{'type': 'string'}, {'type': 'null'}]}, 'sections': {'type': 'object', 'propertyNames': {'type': 'string'}, 'additionalProperties': {'type': 'object', 'required': ['score', 'grade'], 'properties': {'grade': {'type': 'string'}, 'score': {'type': 'number'}}, 'additionalProperties': False}}, 'selector': {'type': 'string'}, 'permalink': {'type': 'string'}, 'smtp_note': {'type': 'string'}, 'created_at': {'type': 'number'}, 'expires_at': {'type': 'number'}, 'updated_at': {'type': 'number'}, 'smtp_status': {'type': 'string'}, 'poll_after_seconds': {'type': 'number'}}, 'additionalProperties': False}
check_dmarc
Check DMARC
Check the domain DMARC policy at _dmarc: presence, policy strength (none/quarantine/reject), and reporting.
只读
可访问外部资源
输入模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['domain'], 'properties': {'domain': {'type': 'string', 'maxLength': 253, 'minLength': 1, 'description': 'The domain to check, e.g. example.com. No scheme or path.'}}}
输出模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['domain'], 'properties': {'grade': {'type': 'string'}, 'score': {'type': 'number'}, 'checks': {'type': 'array', 'items': {'type': 'object', 'required': ['id', 'status', 'message'], 'properties': {'id': {'type': 'string'}, 'rfc': {'anyOf': [{'type': 'string'}, {'type': 'null'}]}, 'status': {'type': 'string'}, 'details': {'anyOf': [{}, {'type': 'null'}]}, 'message': {'type': 'string'}, 'section': {'type': 'string'}, 'severity': {'type': 'string'}}, 'additionalProperties': False}}, 'domain': {'type': 'string'}, 'provider': {'anyOf': [{'type': 'string'}, {'type': 'null'}]}, 'sections': {'type': 'object', 'propertyNames': {'type': 'string'}, 'additionalProperties': {'type': 'object', 'required': ['score', 'grade'], 'properties': {'grade': {'type': 'string'}, 'score': {'type': 'number'}}, 'additionalProperties': False}}, 'selector': {'type': 'string'}, 'permalink': {'type': 'string'}, 'smtp_note': {'type': 'string'}, 'created_at': {'type': 'number'}, 'expires_at': {'type': 'number'}, 'updated_at': {'type': 'number'}, 'smtp_status': {'type': 'string'}, 'poll_after_seconds': {'type': 'number'}}, 'additionalProperties': False}
check_domain
Full email deliverability check
Run the full email and DNS deliverability check for a domain: MX, SPF, DKIM, DMARC, DNS health, provider detection, and blacklists. Returns a letter grade (A+ to F, where specific weaknesses cap the grade), a 0 to 100 score, and every individual check with its RFC reference. Set include_smtp to also run a live SMTP probe of the mail servers: the probe is non-blocking, so when smtp_status is "pending" or "running" call this tool again (poll_after_seconds hints how long to wait) until smtp_status is "complete" and the SMTP checks appear in checks.
只读
可访问外部资源
输入模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['domain'], 'properties': {'domain': {'type': 'string', 'maxLength': 253, 'minLength': 1, 'description': 'The domain to check, e.g. example.com. No scheme or path.'}, 'include_smtp': {'type': 'boolean', 'default': False, 'description': 'Also run a live SMTP connectivity probe of the MX hosts. Non-blocking: poll by re-calling until smtp_status is complete.'}}}
输出模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['domain'], 'properties': {'grade': {'type': 'string'}, 'score': {'type': 'number'}, 'checks': {'type': 'array', 'items': {'type': 'object', 'required': ['id', 'status', 'message'], 'properties': {'id': {'type': 'string'}, 'rfc': {'anyOf': [{'type': 'string'}, {'type': 'null'}]}, 'status': {'type': 'string'}, 'details': {'anyOf': [{}, {'type': 'null'}]}, 'message': {'type': 'string'}, 'section': {'type': 'string'}, 'severity': {'type': 'string'}}, 'additionalProperties': False}}, 'domain': {'type': 'string'}, 'provider': {'anyOf': [{'type': 'string'}, {'type': 'null'}]}, 'sections': {'type': 'object', 'propertyNames': {'type': 'string'}, 'additionalProperties': {'type': 'object', 'required': ['score', 'grade'], 'properties': {'grade': {'type': 'string'}, 'score': {'type': 'number'}}, 'additionalProperties': False}}, 'selector': {'type': 'string'}, 'permalink': {'type': 'string'}, 'smtp_note': {'type': 'string'}, 'created_at': {'type': 'number'}, 'expires_at': {'type': 'number'}, 'updated_at': {'type': 'number'}, 'smtp_status': {'type': 'string'}, 'poll_after_seconds': {'type': 'number'}}, 'additionalProperties': False}
check_mx
Check MX records
Check the MX records of a domain: presence, hostnames, resolution, null-MX, and common misconfigurations.
只读
可访问外部资源
输入模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['domain'], 'properties': {'domain': {'type': 'string', 'maxLength': 253, 'minLength': 1, 'description': 'The domain to check, e.g. example.com. No scheme or path.'}}}
输出模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['domain'], 'properties': {'grade': {'type': 'string'}, 'score': {'type': 'number'}, 'checks': {'type': 'array', 'items': {'type': 'object', 'required': ['id', 'status', 'message'], 'properties': {'id': {'type': 'string'}, 'rfc': {'anyOf': [{'type': 'string'}, {'type': 'null'}]}, 'status': {'type': 'string'}, 'details': {'anyOf': [{}, {'type': 'null'}]}, 'message': {'type': 'string'}, 'section': {'type': 'string'}, 'severity': {'type': 'string'}}, 'additionalProperties': False}}, 'domain': {'type': 'string'}, 'provider': {'anyOf': [{'type': 'string'}, {'type': 'null'}]}, 'sections': {'type': 'object', 'propertyNames': {'type': 'string'}, 'additionalProperties': {'type': 'object', 'required': ['score', 'grade'], 'properties': {'grade': {'type': 'string'}, 'score': {'type': 'number'}}, 'additionalProperties': False}}, 'selector': {'type': 'string'}, 'permalink': {'type': 'string'}, 'smtp_note': {'type': 'string'}, 'created_at': {'type': 'number'}, 'expires_at': {'type': 'number'}, 'updated_at': {'type': 'number'}, 'smtp_status': {'type': 'string'}, 'poll_after_seconds': {'type': 'number'}}, 'additionalProperties': False}
check_spf
Check SPF
Check the domain SPF policy: presence, syntax, the all qualifier, and the 10-lookup limit.
只读
可访问外部资源
输入模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['domain'], 'properties': {'domain': {'type': 'string', 'maxLength': 253, 'minLength': 1, 'description': 'The domain to check, e.g. example.com. No scheme or path.'}}}
输出模式
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['domain'], 'properties': {'grade': {'type': 'string'}, 'score': {'type': 'number'}, 'checks': {'type': 'array', 'items': {'type': 'object', 'required': ['id', 'status', 'message'], 'properties': {'id': {'type': 'string'}, 'rfc': {'anyOf': [{'type': 'string'}, {'type': 'null'}]}, 'status': {'type': 'string'}, 'details': {'anyOf': [{}, {'type': 'null'}]}, 'message': {'type': 'string'}, 'section': {'type': 'string'}, 'severity': {'type': 'string'}}, 'additionalProperties': False}}, 'domain': {'type': 'string'}, 'provider': {'anyOf': [{'type': 'string'}, {'type': 'null'}]}, 'sections': {'type': 'object', 'propertyNames': {'type': 'string'}, 'additionalProperties': {'type': 'object', 'required': ['score', 'grade'], 'properties': {'grade': {'type': 'string'}, 'score': {'type': 'number'}}, 'additionalProperties': False}}, 'selector': {'type': 'string'}, 'permalink': {'type': 'string'}, 'smtp_note': {'type': 'string'}, 'created_at': {'type': 'number'}, 'expires_at': {'type': 'number'}, 'updated_at': {'type': 'number'}, 'smtp_status': {'type': 'string'}, 'poll_after_seconds': {'type': 'number'}}, 'additionalProperties': False}
历史
近期工具变更
已添加
check_dkim
2026年9月17日 12:54
已添加
check_blacklist
2026年9月17日 12:54
已添加
check_dmarc
2026年9月17日 12:54
已添加
check_spf
2026年9月17日 12:54
已添加
check_mx
2026年9月17日 12:54
已添加
check_domain
2026年9月17日 12:54
发现
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