Re: all incoming mail is being blocked

Most RBL publishers do not maintain their lists for money. They point
out that any administrator who uses their list in a production
environment for blocking or filtering MAY inadvertently filter large
subnet blocks.

If mailserver1 is _blocking_ mail based on an RBL entry, the
administrator for mailserver1 is responsible for blocking the mail.
Not the RBL. There will always be mistakes, human or computerized.

Declaring an RBL not "reliable" because of a temporary problem would
eliminate 100% of all RBLs currently running, and running in the past.
As an admin, you have to roll with the punches. If the SORBS list is
dirty this week, then pull that entry. Try it again in a couple of
weeks.

Furthermore, _blocking_ mail based on DNS lookup to an RBL is not the
best method. You are using one single criterion to accept/reject mail.
Use several criteria for evaluating messages or connections. It's not
as easy, and it requires more processing. But, you may experience
fewer complaints.

For example, blocking on RFC-IGNORANT would kill even more of your mail
traffic than is necessary. But, it can be applied as one of many
criteria in a scoring system.

Sorry to say, there isn't much chance of and IMMEDIATE fix to correct
hundreds of listings in an RBL listing. Immediate action, maybe
ongoing. But it will take a while to process all of the changes.
Remember: for no pay, on spare time, on borrowed equipment, with
thousands of complaints and requests.

As for lawsuits...when mail is blocked by a setting created by the
admin...it's the admin's responsibility. I've had to shuffle RBLs, and
discontinue some entirely. It was my choice to filter and block the
mail in that manner.

It's a never-ending battle. You can't just "set it and forget it".

Regards,
Alan

.

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