On 19/05/2023 16:34, Irwan R Jazir via Mdaemon-L wrote:

gmail-smtp-in.l.google.com[74.125.130.26] said: 550-5.7.26 This mail is

unauthenticated, which poses a security risk to the 550-5.7.26 sender and

Gmail users, and has been blocked. The sender must 550-5.7.26 authenticate

with at least one of SPF or DKIM. For this message, 550-5.7.26 DKIM checks

did not pass and SPF check for [mandau.id] did not pass 550-5.7.26 with ip:

[113.11.182.16]. The sender should visit 550-5.7.26

https://support.google.com/mail/answer/81126#authentication for 550 5.7.26

instructions on setting up authentication.

t189-20020a6381c6000000b0053489d58e12si1004128pgd.772 - gsmtp (in reply to

end of DATA command)

bantu jawab ya Pak,

Kalau saya cek SPF mandau.id =

v=spf1 +mx +a +ip4:*184.170.148.125*  ~all

Sedangkan IP yg dipakai utk sending email memakai : Connection 
established*117.102.89.155*:52652 --> 74.125.68.27:25

mungkin karena ini tidak sama dengan ip SPF sehingga ditolak oleh Gmail.

Maaf kalo solusinya salah

Rgds,

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