On Mon, March 26, 2007 4:21 am, Kent Tong wrote:
> We have moved our DNS server from one IP to another. But on a Linux
> server, the PHP programs keep using the old DNS server IP. For
> example, for a simple php file:
>
> <? echo gethostbyname ("smtp.cpttm"); ?>
>
> When it is run, it tries to lookup smtp.cpttm using the old DNS
> server (I know it using tcpdump). The new DNS server is specified in
> /etc/resolv.conf. If I issue "ping smtp.cpttm" in a command prompt,
> then tcpdump shows that it is accessing the new DNS server.
>
> Any idea? Thanks.
Check /etc/hosts
Try doing the same thing from the command line.
And did you re-start apache so PHP could "forget" any DNS entries in
any cache it might have? There may be something akin to
clearstatcache for DNS in PHP as well.
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