Sendmail 8.13.1

Background:
E-mail with multiple recipients to yahoo.com is receiving a "Deferred:
421 Too many recipients" response. Some of these have as few as 6
addresses in the envelope.

Question 1:
Is there a command line option where I can force sendmail to run a queue
and send it individually to each recipient rather than try to send the
message to all addresses at a single domain at once?
e.g. sendmail -qI<substr> -someOptionIcantFind

Question 2:
Is there a config file option where I can tell sendmail to attempt
delivery to yahoo.com recipients as described in question 1?

Thanks for any you can provide.

David

If Yahoo would give the correct code, 452, this would take care of
itself. Mail would go to the first 5, the rest would queue, and the
message would get there 5 at a time.

But Yahoo says 421, which means "Service not available, closing
transmission channel" (see RFC 2821), so sendmail sends nothing, and
jumps to the next Yahoo server, where the same problem happens all
over.

Actually RFC 2821 also says the minimum to accept is 100, not 5. All
Yahoo appears to be accomplishing here is degrading service for their
recipients and other sites' mail servers.

We've been trying to reach Yahoo folks yesterday and today. We think
this problem started Monday.

Joseph Brennan
Columbia University Information Technology

David Meuleman wrote:
> Sendmail 8.13.1
>
> Background:
> E-mail with multiple recipients to yahoo.com is receiving a "Deferred:
> 421 Too many recipients" response. Some of these have as few as 6
> addresses in the envelope.
>
> Question 1:
> Is there a command line option where I can force sendmail to run a queue
> and send it individually to each recipient rather than try to send the
> message to all addresses at a single domain at once?
> e.g. sendmail -qI<substr> -someOptionIcantFind

Well you might want to try defining a new mailer, copied from the esmtp
one that uses the m= field to limit the number of new recipients.

Then you can run the queue group with the alternate cf file.

That may or may not work.

>
> Question 2:
> Is there a config file option where I can tell sendmail to attempt
> delivery to yahoo.com recipients as described in question 1?

see above, then use mailertable

>
> Thanks for any you can provide.
>
> David

"Joe Brennan" <brennan@columbia.edu> wrote in news:1161793932.243199.202160
@h48g2000cwc.googlegroups.com:

> But Yahoo says 421, which means "Service not available, closing
> transmission channel" (see RFC 2821), so sendmail sends nothing, and
> jumps to the next Yahoo server, where the same problem happens all
> over.

I'm seeing the same thing on some Mailman-based lists I administer on a web
server. My biggest list has 9 Yahoo.com addresses, and so I've contacted
all of them, asking for alternate addresses to use because I don't trust
Yahoo to bother to fix this anytime soon (if ever).

> We've been trying to reach Yahoo folks yesterday and today.

Good luck with that, but if you actually reach a live person by phone, I'd
be shocked, and if you send email, it will get processed by "bots" that
look for key words in your message.

> We think this problem started Monday.

Yes, that's about when I started seeing the errors. We've not sent to that
list much this week, however, hoping that this will "blow over," but with
Yahoo, you just never know.

DT