coba kirim ke gmail, lalu 'show original' nanti kelihatan salahnya dimana
apakah di rdns, spf, dkim/domainkey, statusnya sudah 'pass' atau belum
tambah dmarc juga bagus
cek juga apakah ip-nya memang masuk blacklist, bisa cek di mxtoolbox.com
Invalid SuperTool Syntax
IP not allowed. MX addresses must be a fully qualified hostname.
About the SuperTool!
All of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool. Input a
domain name or
IP Address or
Host Name. Links in the results will guide you to other relevant tools and information. And you'll have a chronological history of your results.
If you already know exactly what you want, you can force a particular test or lookup. Try some of these examples:
(e.g. "blacklist: 127.0.0.2" will do a blacklist lookup)
Command Explanation
blacklist: Check IP or host for reputation
smtp: Test mail server SMTP (port 25)
mx: DNS MX records for domain
a: DNS A record IP address for host name
spf: Check SPF records on a domain
txt: Check TXT records on a domain
ptr: DNS PTR record for host name
cname: DNS canonical host name to IP address
scan: Perform a port scan on the host
whois: Get domain registration information
arin:
Get IP address block information
soa:
Get Start of Authority record for a domain
tcp:
Verify an IP Address allows tcp connections
http:
Verify a URL allows http connections
https:
Verify a URL allows secure http connections
ping:
Perform a standard ICMP ping
trace:
Perform a standard ICMP trace route
dns:
Check your DNS Servers for possible problems New!
itu udah keblacklist ya ??