Domainchecker
MX
no MX record
MX
No MX record found!
SPF
v=spf1 include:_spf.inboxsys.net include:ip4.inboxsys.net include:ip6.inboxsys.net -all
SPF
v=spf1 include:_spf.inboxsys.net include:ip4.inboxsys.net include:ip6.inboxsys.net -all
No default is set
DNS lookups:
1: include:_spf.inboxsys.net
2: include:ip4.inboxsys.net
3: include:ip6.inboxsys.net
4: include:_ip6_1.inboxsys.net
5: include:_ip6_2.inboxsys.net
No default is set
DNS lookups:
1: include:_spf.inboxsys.net
2: include:ip4.inboxsys.net
3: include:ip6.inboxsys.net
4: include:_ip6_1.inboxsys.net
5: include:_ip6_2.inboxsys.net
DKIM selector
DKIM
Example (copy&paste between the quotes): "v=DKIM1;k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDE9CGsA+KlcZhpt22zoE2oDMZQzYCbqfph9tfeaCjZG1y2qUQ+IfJIqncxSeQ30Q9B+Stlmy/oWq8V6E+PMsdC1BnCNXWwVYeTUUAUjOSH1REk0XE2g15RaXHOQzK9BNanfnGjhXRi9gpTIx4efOXdfLVOzE/UhwJPP3QKXJ0ypQIDAQAB"
DMARC
v=DMARC1; p=none; rua=mailto:dmarc@dmarc.mailmike.net; rf=afrf; pct=100;
DMARC
DMARC matches your settings
Domainchecker copy / paste
date: 08.12.2025 - [direct link] - Senderdomain: postmaster.inboxsys.us
host -t mx postmaster.inboxsys.us.
domain postmaster.inboxsys.us not found
host -t txt postmaster.inboxsys.us.
postmaster.inboxsys.us descriptive text v=spf1 include:_spf.inboxsys.net include:ip4.inboxsys.net include:ip6.inboxsys.net -all. [warn]
host -t txt deliv202301._domainkey.postmaster.inboxsys.us.
domain deliv202301._domainkey.postmaster.inboxsys.us not found
host -t txt _dmarc.inboxsys.us.
_dmarc.inboxsys.us descriptive text v=DMARC1; p=none; rua=mailto:dmarc@dmarc.mailmike.net; rf=afrf; pct=100;. [ok]
host -t mx postmaster.inboxsys.us.
domain postmaster.inboxsys.us not found
host -t txt postmaster.inboxsys.us.
postmaster.inboxsys.us descriptive text v=spf1 include:_spf.inboxsys.net include:ip4.inboxsys.net include:ip6.inboxsys.net -all. [warn]
host -t txt deliv202301._domainkey.postmaster.inboxsys.us.
domain deliv202301._domainkey.postmaster.inboxsys.us not found
host -t txt _dmarc.inboxsys.us.
_dmarc.inboxsys.us descriptive text v=DMARC1; p=none; rua=mailto:dmarc@dmarc.mailmike.net; rf=afrf; pct=100;. [ok]