[OPLINTECH] Reverse DNS Entry
Brad Stephens
stephebr@nolanet.org
Mon, 20 Jun 2005 15:13:02 -0400
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Chad -
=20
You're right about needing Reverse DNS for sending email to AOL, we ran
into the same thing for several of our libraries that had email-based
holds notices bouncing when sent to AOL. =20
=20
To make it more interesting you need to have not only a reverse entry
for your mail server, but if you're using a second SMTP server to send
the emails you also need a PTR entry for the public source IP address
that is sending the email message. So you may find that you really need
several reverse pointers based on firewall setup or if you're sending
emails from an ILS or other application located on a different server. =20
=20
Hope that this is helpful -
Brad
-----Original Message-----
From: oplintech-admin@oplin.org
[mailto:oplintech-admin@oplin.org] On Behalf Of Chad
Sent: Monday, June 20, 2005 1:23 PM
To: oplintech@oplin.org
Subject: [OPLINTECH] Reverse DNS Entry
=09
=09
Hello,
=20
We are running a public e-mail server and require a reverse DNS
entry (ptr record) in order to send e-mails to AOL. It appears that we
need this entry to be set by the owner of the IP address range (Oplin).
The IP address in question is 66.213.68.6.
=20
Thank you,
=20
Public Library of Mount Vernon and Knox County =09
=09
Chad Nichols
Network Admin 201 N. Mulberry St.
Mount Vernon, OH 43050
<http://maps.yahoo.com/py/maps.py?Pyt=3DTmap&addr=3D201+N.+Mulberry+St.&c=
sz=3D
Mount+Vernon%2C+OH++43050&country=3Dus> =09
tel: 740-392-2665 =09
=09
Add me to your address book...
<https://www.plaxo.com/add_me?u=3D34360672104&v0=3D1862418&k0=3D556293009=
>
Want a signature like this? <http://www.plaxo.com/signature> =09
=20
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<BODY>
<DIV><SPAN class=3D975405918-20062005><FONT face=3DArial color=3D#0000ff =
size=3D2>Chad=20
-</FONT></SPAN></DIV>
<DIV><SPAN class=3D975405918-20062005><FONT face=3DArial color=3D#0000ff =
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D975405918-20062005><FONT face=3DArial color=3D#0000ff =
size=3D2>You're=20
right about needing Reverse DNS for sending email to AOL, w<SPAN=20
class=3D975405918-20062005><FONT face=3DArial color=3D#0000ff size=3D2>e =
ran into the=20
same thing for several of our libraries that had email-based holds =
notices=20
bouncing when sent to AOL. </FONT></SPAN></FONT></SPAN></DIV>
<DIV><SPAN class=3D975405918-20062005><FONT face=3DArial color=3D#0000ff =
size=3D2><SPAN=20
class=3D975405918-20062005><FONT face=3DArial color=3D#0000ff=20
size=3D2></FONT></SPAN></FONT></SPAN> </DIV>
<DIV><SPAN class=3D975405918-20062005><FONT face=3DArial color=3D#0000ff =
size=3D2><SPAN=20
class=3D975405918-20062005><FONT face=3DArial color=3D#0000ff=20
size=3D2>To</FONT></SPAN> make it more interesting you need to have =
not only=20
a reverse entry for your mail server, but if you're using a second SMTP =
server=20
to send the emails you also need a PTR entry for the public source IP =
address=20
that is sending the email message. So you may find that you really =
need=20
several reverse pointers based on firewall setup or if you're sending =
emails=20
from an ILS or other application located on a different server. =20
</FONT></SPAN></DIV>
<DIV><SPAN class=3D975405918-20062005><FONT face=3DArial color=3D#0000ff =
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D975405918-20062005><FONT face=3DArial color=3D#0000ff =
size=3D2>Hope=20
that this is helpful -</FONT></SPAN></DIV>
<DIV><SPAN class=3D975405918-20062005><FONT face=3DArial color=3D#0000ff =
size=3D2>Brad</FONT></SPAN></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr =
align=3Dleft><FONT=20
face=3DTahoma size=3D2>-----Original Message-----<BR><B>From:</B>=20
oplintech-admin@oplin.org [mailto:oplintech-admin@oplin.org] <B>On =
Behalf Of=20
</B>Chad<BR><B>Sent:</B> Monday, June 20, 2005 1:23 PM<BR><B>To:</B>=20
oplintech@oplin.org<BR><B>Subject:</B> [OPLINTECH] Reverse DNS=20
Entry<BR><BR></FONT></DIV>
<DIV></DIV>
<DIV><SPAN class=3D679461317-20062005><FONT face=3DArial=20
size=3D2>Hello,</FONT></SPAN></DIV>
<DIV><SPAN class=3D679461317-20062005><FONT face=3DArial=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D679461317-20062005><FONT face=3DArial size=3D2>We =
are running a=20
public e-mail server and require a reverse DNS entry (ptr record) in =
order to=20
send e-mails to AOL. It appears that we need this entry to be =
set by the=20
owner of the IP address range (Oplin). The IP address in =
question is=20
66.213.68.6.</FONT></SPAN></DIV>
<DIV><SPAN class=3D679461317-20062005><FONT face=3DArial=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D679461317-20062005><FONT face=3DArial =
size=3D2>Thank=20
you,</FONT></SPAN></DIV>
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<TD class=3Dlogotext style=3D"PADDING-LEFT: =
5px">Public=20
Library of Mount Vernon and Knox County</TD>
<TD class=3Dnoro=20
style=3D"PADDING-RIGHT: 5px; FONT-SIZE: 7pt"=20
align=3Dright></TD></TR></TBODY></TABLE></TD>
<TD class=3Dtiny></TD></TR>
<TR>
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<TABLE height=3D"100%" cellSpacing=3D2 =
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<TR style=3D"PADDING-BOTTOM: 4px" height=3D1>
<TD class=3Dnoro style=3D"PADDING-LEFT: 4px"=20
vAlign=3Dtop><B>Chad Nichols</B><BR><I>Network =
Admin</I>=20
</TD>
<TD class=3Dnoro style=3D"PADDING-RIGHT: 4px" =
vAlign=3Dtop=20
align=3Dright><A class=3Dpsl=20
=
href=3D"http://maps.yahoo.com/py/maps.py?Pyt=3DTmap&addr=3D201+N.+Mul=
berry+St.&csz=3DMount+Vernon%2C+OH++43050&country=3Dus"=20
target=3D_blank>201 N. Mulberry St.<BR>Mount =
Vernon, OH=20
43050</A> </TD></TR>
<TR height=3D1>
<TD class=3Dnoro=20
style=3D"PADDING-LEFT: 4px; PADDING-BOTTOM: 4px" =
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4px"=20
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<TABLE cellSpacing=3D0 align=3Dright =
border=3D0>
<TBODY>
<TR>
<TD class=3Dnoro noWrap align=3Dright>tel: =
</TD>
<TD class=3Dnoro style=3D"PADDING-LEFT: =
4px" noWrap=20
align=3Dright>740-392-2665=20
=
</TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></TD></TR></TBODY></T=
ABLE></TD>
<TD></TD></TR></TBODY></TABLE></TD></TR>
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<TD align=3Dleft><A class=3Dbrand=20
=
href=3D"https://www.plaxo.com/add_me?u=3D34360672104&v0=3D1862418&=
;k0=3D556293009"=20
target=3D_blank><I>Add me to your address =
book...</I></A></TD>
<TD align=3Dright><A class=3Dbrand=20
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