TTL MX Entry

[Kevin Darcy]

You must be dealing with an old nameserver that doesn't obey RFC 2181. Section 5.2
of that RFC forbids differing TTLs in a RRset.


- Kevin

hermann.strassner at hama.de wrote:

> Hi!
>
> Does it make sense to make the TTL of a MX entry smaller (eg=2E 28800 secs)=20=
> and to let an other MX entry at the default (1 day)?
>
> We have two MX entries, one pointing to our mail server and the other=20=
> pointing to our ISPs mail relay as backup=2E I want to change the internal=20=
> mail server so i made the TTL of this entry smaller=2E This entry=20=
> disappears from time to time on a caching nameserver then reappears=20=
> automatically=2E Is it right that when the TTL of the mail server with=20=
> higher priority is over a mail resolver uses the other entry without=20=
> asking for the mx entries again?
>
> Hermann Stra=DFner