[PLUG] Email question: incoming message to one domain blocked

[Paul Heinlein]

On Fri, 9 Aug 2024, Rich Shepard wrote:

> I have two email addresses, one for business the other for personal use.
>
> An item ordered from Amazon arrived missing one piece. I called the seller
> and they asked for a copy of the invoice when responding to a message they
> tried sending to my person address. That was blocked:
> Aug  9 07:04:09 salmo postfix/smtpd[11895]: NOQUEUE: reject: RCPT from
> o1326.shared.klaviyomail.com[167.89.77.234]: 554 5.7.1 Service unavailable;
> Client host [167.89.77.234] blocked using bl.spamcop.net;
> from=<bounces+42894315-d079-rshepard=twodogs.us at k1.marketing.charbroil.com>
> to=<rshepard at twodogs.us> proto=ESMTP helo=<o1326.shared.klaviyomail.com>
>
> But, when I gave the support person my business email address that message
> came through. Why might a message to one address be blocked but not blocked
> to the other?

Assuming that salmo hosts both e-mail domains, here are a couple 
scenarios that occur to me:

Timing. If spamcop mistakenly blocked the klaviyomail.com domain and 
the latter's admins successfully cleared it up after the first message 
was sent but before the second was sent, the difference may be due to 
nothing more than the timing.

Different configs. I'm not a postfix user, so I don't know if it's 
possible that one of your e-mail domains has a different configuration 
than the other.

-- 
Paul Heinlein
heinlein at madboa.com
45°22'48" N, 122°35'36" W