What about SPF, DMARC, DKIM ? I am sending 250k/day and only Earthlink
seems to care. How many checks are actually necessary ?
-Ryan
On 12/13/2017 03:32 PM, Vladimir Dubrovin via mailop wrote:
Not only Earthlink cares, it's a standard procedure.
This validation confirms your IP really belongs to the domain.
This is standard validation for PTR everyone does, without this
validation you can set PTR to arbitrary domain (e.g. example.com). Not
everyone rejects messages based on this check, but it's also an
option, see e.g.
http://www.postfix.org/postconf.5.html#reject_unknown_client_hostname
14.12.2017 0:02, Ryan Prihoda пишет:
William,
Yes our PTR is set correctly, but our domain does resolve to a
different IP. Why does only Earthlink care about that ? Seems silly.
Sincerely,
*Ryan Prihod**a
*Systems Administrator
*dyna**Connections****Corp.
*1101 S. Capital of TX Hwy.
Bldg. H, Suite 130
Austin, Texas 78746
rprih...@dynaconnections.com <mailto:rprih...@dynaconnections.com>
www.dynaconnections.com <http://www.dynaconnections.com/>
On 12/13/2017 02:47 PM, W Kern wrote:
its misleading.
We saw that a few weeks ago.
Make sure the FQDN you reverse zone file provides, also resolves
back to the same IP.
We were just as confused. The PTR was there, but because of a typo
it didn't resolve.
Fixed that and Earthlink was happy.
Sincerely,
William Kern
Pixelgate Networks.
On 12/13/2017 12:21 PM, Ryan Prihoda wrote:
Hello all,
We are getting errors from one of our servers.
550 ERROR: No or mismatched reverse DNS (PTR) entries
When, in fact there is only one record for that IP. Can anyone from
Earthlink look into this for us ?
Sincerely,
*Ryan Prihod**a
*Systems Administrator
*dyna**Connections****Corp.
*1101 S. Capital of TX Hwy.
Bldg. H, Suite 130
Austin, Texas 78746
rprih...@dynaconnections.com <mailto:rprih...@dynaconnections.com>
www.dynaconnections.com <http://www.dynaconnections.com/>
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--
Vladimir Dubrovin
@Mail.Ru
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