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ISP customers e-mails being rejected by other providers...
I work for a small ISP, and it appears as though some of our users e-mail are being blocked by other providers. This blocking is not being caused by RBL's or domain/IP-based blocking as far as I can tell. Below is a copy of the error message our customers are receiving from other providers...- turbomike
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- Replies: 1
- Forum: Sendmail, Inc.: Sendmail
