[OPLINTECH] email not delivered

Tue Jun 20 11:13:10 EDT 2017

I understand the concepts of how email and listservs work, but I've only
dabbled in setting up and working with simple mail servers myself and don't
know all the nuances. But it seems to me that, while the problem is
ultimately yours, the cause would have to be partly on the receiving mail
server's side, in the sense of its rejection of inbound mail originating
from your address (or from your mail server's IP address). If some people
on the lists are receiving the mail from you, then you are *sending*
without issue. If you're consistently being rejected by a listserve and
nobody on that listserv is receiving your mail, then I'd look to the
listserv as the one rejecting mail from your email address or mail server's
IP address. If *some* people on the listserv are receiving your emails,
then the mail is getting forwarded from the listserv and the mail would be
getting rejected by the individual recipients' mail servers.

The only thing that makes sense to me is that your mail server's IP address
has gotten itself on a block list that the would-be recipients' mail
servers subscribe to....something you've already thought of and looked
into. Maybe you haven't found the right blocklist?

Could a misconfigured DNS SPF record for your domain cause this, where the
would-be recipients' mail servers are less forgiving than others?

I think you need the opinion of a mail server admin here.      Karl?

(I had the passing thought to not respond to your email in the hopes that
everyone else would to.   ...but that would be mean.   LOL!)

Chad

______________________________
*Chad Neeper*
Senior Systems Engineer

*Level 9 Networks*
740-548-8070 (voice)
866-214-6607 (fax)

*Full IT/Computer consulting services -- Specialized in libraries and
schools*

On Tue, Jun 20, 2017 at 10:45 AM, Joe Knueven via OPLINTECH <
oplintech at lists.oplin.org> wrote:

> Good day everyone,
>
>
>
> I’ve noticed a situation and I was wondering if anyone else has seen
> this/has a good idea for a solution.
>
>
>
> I have found over the last year or more that when I send emails from my
> library account to some lists that some  individuals on the lists are not
> seeing my emails, only the replies to them from other list members.
>
>
>
> In the two particular cases where I am certain this has happened, both
> individuals who were not getting the originals were in academic libraries
> at relatively small colleges.  In one of those two cases, the recipient I
> know had more general technical knowledge than I do, which makes me think
> this isn’t just people not knowing how to find their spam folder.
>
>
>
> My email is setup through Microsoft’s Office 365 Educational (I think they
> call the level “E1”), which is freely available to public libraries level.
> In the most recent case, I have looked at least a few blacklist searches
> for our domain as well as our primary oplin IP address, and both show up as
> not listed.
>
>
>
> Does anyone have any other thoughts on what is going on, or how to solve
> this?  I know that I could setup a gmail account and everyone would see it,
> but I hate to dump a portion of my work communications onto a personal
> account or maintain multiple work email accounts because of some vagary
> with O365..
>
>
>
> Thank you for any insights.  Have a good day.
>
>
>
> Joe
>
>
>
>
>
> Joseph Knueven, Director
>
> Germantown Public Library
>
> 51 North Plum Street
>
> Germantown, OH 45327
>
> 937-855-4001 <(937)%20855-4001>
>
>
>
> _______________________________________________
> OPLINTECH mailing list
> OPLINTECH at lists.oplin.org
> http://lists.oplin.org/mailman/listinfo/oplintech
>
>
>
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