On 2008-08-20, Bob Tennent
wrote:
> I recently migrated from Fedora to CentOs and forgot to configure
> SMART_HOST in sendmail.mc. I discovered this after my ISP cut off
> my internet access because they say I was sending spam. Would the
> lack of a SMART_HOST make ordinary mail look like spam to an ISP?
Many ISPs automatically flag inbound mail arriving directly from dynamic
IP addresses as spam.
> How come outgoing e-mail worked at all?
Your ISP doesn't block outbound port 25 from dynamic IP addresses.
--
John (john@os2.dhs.org)
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