> > I wouldn't jump to condemning Eircom, IOL, or SpamCop based on the
> > sketchy details we know.
> Well, what we do know is that the two largest ISP's in this country can't
> intercommunicate.
We don't know that.
We know that _one_ of _a_ pool of three IOL mailservers wouldn't accept
mail from _one_ of _a_ pool of twelve Eircom mailservers. Beyond this
is speculation. It is not uncommon for one server from a pool (ie., of
outgoing mail relays) to be blacklisted.
We also know that SpamCop is not currently blacklisting the particular
Eircom mailserver.
IOL support should know more about this.
> Personally it makes me re-think my own blacklist strategy.
It might be worth investigating using SpamCop, or some other RBL, in
conjunction with another mail filter. For example, SpamAssassin can use
SpamCop (and other RBL's ?) to add hits to an incoming mail, which might
be better than having your MTA reject SpamCop-listed senders. I'm sure
you'd get twice as many opinions on this as there are possible setups
though.
> ... when it comes down to an ISP ...
That's up to affected customers to tell their ISP that they're
happy/unhappy with such blacklisting, being prepared to vote with
wallets, etc.
--
In our civilization, and under our republican form of government,
intelligence is so highly honored that it is rewarded by exemption
from the cares of office.
-Ambrose Bierce, The Devil's Dictionary
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