MX records for dynamic IP?

[Michelle Konzack]

Sorry for the broken Thread,  but  my  Registrar  has  not  changed  the
Nameservers yet and I can not more get any messages...

---- From: Barry Margolin on Thu Apr 16 23:00:13 UTC 2009:

> That problem exists even if you don't go through an alias, e.g.
> 
> foo.com. IN MX 10 foo.dyndns.org.
> 
> Did you notice that his dynamic A record has a 60-second TTL?  Unless he 
> gets lots of mail, I think a one-minute window of vulnerability is 
> reasonably safe.  If he has a cable modem service, they typically change 
> IPs very rarely.  And the customer who gets your old IP would have to be 
> running a mail server, and configure it to accept mail for your address, 
> for this to cause mis-delivery.

Thisis why I have setup a TTL of 60 seconds. My IP changes all 24 hours.

> > If you can run your web services and mail services on *static* IPs that 
> > would be preferred. Trying to run this kind of stuff on dynamic IPs is 
> > always going to be an uphill battle. Maybe you relish the challenge; 
> > most people just want their stuff to work.

Static IPs are typically more expensive than dynamic ones, and that 
extra expense may not be justified for many people.

Note:   Because a techical problem (not on  my  side)  I  can  not  get
        currently I can not get my 100 MBit Backbone before 3 month and
        since I have bougth a new  CISCO  for  78000 Euro,  a  100 MBit
        Ceragon wireless bridge for 13000 Euro, a Sun Enterprise  T5240
        for a realy nice price, I am now fsck'ed...

Thanks, Greetings and nice Day/Evening
    Michelle Konzack
    Systemadministrator
    24V Electronic Engineer
    Tamay Dogan Network
    Debian GNU/Linux Consultant

-- 
Linux-User #280138 with the Linux Counter, http://counter.li.org/
##################### Debian GNU/Linux Consultant #####################
<http://www.tamay-dogan.net/>                 Michelle Konzack
<http://www.can4linux.org/>                   Apt. 917
<http://www.flexray4linux.org/>               50, rue de Soultz
Jabber linux4michelle at jabber.ccc.de           67100 Strasbourg/France
IRC #Debian (irc.icq.com)                     Tel. DE: +49 177 9351947
ICQ #328449886                                Tel. FR: +33  6  61925193
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.pgp
Type: application/pgp-signature
Size: 189 bytes
Desc: Digital signature
URL: <https://lists.isc.org/pipermail/bind-users/attachments/20090417/9dd95b20/attachment.bin>