我用gmail寄信到某個人的信箱會寄不進去耶 10封大概只成功一封
會有寄信人是 Mail Delivery Subsystem 的信息
內容是：
──────────────────────────────────────
This is an automatically generated Delivery Status Notification
Delivery to the following recipient failed permanently:
[email protected]
Technical details of permanent failure:
PERM_FAILURE: SMTP Error (state 8): 550 Denied by policy: Sender is listed on
DNS-based RBL.
──────────────────────────────────────
請問這是gmail的問題嗎..? 我寄給其他人都正常
偏偏這個是系辦的行政人員 =.=
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