[OPLINLIST] [OPLINTECH] email blacklisted with 1and1?

[Karl Jendretzky]

The MX record for listserv.iii.com is oakdc-smtp-01.iii.com which is a
CNAME for smtp.iii.com. For some reason 1&1's smtp daemon doesn't seem
to like CNAME record for MX records even though it's fine. I modified
the DNS config for lists.oplin.org to make it work again for some
people with SEO mail, which is hosted by 1&1. This is a 1&1 problem,
but iii could work around it by changing their MX record for that
domain to just be smtp.iii.com (which they shouldn't have to).

The 2nd error is a different problem. Error 1 basically says "we can't
find a pointer to the server" while the 2nd says "we talked to the
server and they said your mailbox is unavailable". Might be that the
person fat fingered the address, or maybe it was a transient issue. If
other people continue to get that error when mailing you we could
probably investigate further.





Karl Jendretzky
IT Manager - Ohio Public Library Information Network
(614) 728-1515
karl at oplin.org


On Fri, Apr 3, 2015 at 2:49 PM, Karen Perone <kperone at rodmanlibrary.com> wrote:
> Like many others in OPLIN-land, Rodman Library had to find a new email
> provider. Since I had worked with 1and1.com for many years with many other
> organizations, we decided to use them. I would say that 99% of our email is
> working fine. Unfortunately, included in that remaining 1% are mail that I
> need to send to our vendors and to our library system users group mailing
> lists.
>
> I have not been able to send messages to the domains booksite.com,
> innovativeusers.org, or the Sierra list maintained by iii.com. I have
> changed my address with their mailing lists. Messages bounce back to me with
> messages like this:
>
> "This message was created automatically by mail delivery software. A message
> that you sent could not be delivered to one or more of its recipients. This
> is a permanent error. The following address failed:
> "sierra at listserv.iii.com": no valid MX hosts found"
>
> A support person at booksite.com send me this message that she received when
> trying to email me:
>
> "Technical details of permanent failure:
> Google tried to deliver your message, but it was rejected by the server for
> the recipient domain rodmanlibrary.com by mx01.1and1.com. [74.208.5.21].
>
> The error that the other server returned was:
> 550-Requested action not taken: mailbox unavailable
> 550 invalid DNS MX or A/AAAA resource record"
>
> But I continue to receive mail from the list at my new email address. Our
> DNS is hosted by OIT and OPLIN has been helpful to the extent that they can.
> Now I'm at the point of wondering if the 1and1 servers are blacklisted and
> even though the rodmanlibrary.com domain is not on the blacklist, perhaps
> the 1and1 servers are.
>
> Is anyone else using 1and1 experiencing anything similar? Any suggestions to
> make this work properly?
>
> --
>
> *** Note new email address ***
> kperone at rodmanlibrary.com
>
> Karen Perone              kperone at rodmanlibrary.com
> Head of Technology and Technical Services
> Rodman Public Library     voice: 330-821-2665 x101
> 215 E. Broadway Street    fax: 330-821-5053
> Alliance, OH 44601        http://www.rodmanlibrary.com
>
>
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>