一个远程 MCP 服务器,让助手对域名执行只读的 DNS 与邮件认证检查,包括 SPF、DKIM、DMARC、MX 和黑名单。
可以做什么
它提供七个只读查询工具。一次综合检查会报告域名的邮件配置,涵盖 SPF、DMARC、MX、常见选择器上的 DKIM、黑名单、MTA-STS、TLS-RPT 和 BIMI;单项工具则分别检查 SPF 的查询次数与 all 机制、按选择器检查 DKIM 公钥、DMARC 策略与报告地址,以及 MX 记录及其 IP 和反向 DNS。通用 DNS 查询支持常见记录类型或对 IP 做反向查询,黑名单检查可针对 IP 或域名查询公共 DNSBL。
适用场景
适合排查某域名的邮件为何被拒收或进入垃圾箱、在发信前审计域名的邮件认证配置,或检查邮件服务器 IP 是否出现在公共黑名单上。
运行要求
通过 streamable HTTP 连接 mxverdict.com 的远程端点;未声明需要账号、API 密钥或环境变量。检查依赖公共 DNS,因此服务器需要 DNS 网络访问。
安装前请注意
所有工具均描述为只读查询,不会发送、修改或删除数据。查询会把您正在排查的域名和 IP 地址透露给该远程服务及公共 DNS 解析器。若在常见选择器上未找到密钥,DKIM 结果并不确定,因为选择器无法从 DNS 中枚举。
Check everything about a domain's email setup in one call: SPF, DMARC, MX, DKIM on common selectors, domain blocklists, MTA-STS, TLS-RPT and BIMI. Use it for a general question such as "is email set up correctly for example.com".
输入参数domain必填
check_spf
SPF check
Check a domain's SPF record: whether it exists and is valid, how many of the 10 allowed DNS lookups it uses, and how its all mechanism treats mail from servers that are not listed.
输入参数domain必填
check_dkim
DKIM check
Check a domain's DKIM public keys in DNS. With a selector (the s= tag of a DKIM-Signature header), checks that selector's key; without one, probes common selector names. Finding no key on common names does not prove DKIM is missing: selectors cannot be listed from DNS.
输入参数domain必填selector
check_dmarc
DMARC check
Check a domain's DMARC record: whether it exists and is valid, its policy (none, quarantine or reject), alignment, and where reports are sent.
输入参数domain必填
lookup_mx
MX lookup
Look up a domain's MX records (its incoming mail servers), their IP addresses and reverse DNS. DNS only: it does not connect to the mail servers.
输入参数domain必填
dns_lookup
DNS lookup
Look up DNS records of a name. Type ALL (the default) queries A, AAAA, CNAME, MX, NS, TXT, SOA and CAA; any single type can be asked for. An IP address gives its reverse DNS (PTR) lookup.
输入参数name必填type
check_blacklist
Blacklist check
Check whether an IP address or a domain is listed on public DNS blocklists (DNSBLs). A domain is checked on domain blocklists only; to check a mail server, give its IP address.