WARNING: Ignoring deprecated option --unzip

[Julian Field]

On 26/1/09 18:23, Kevin Miller wrote:
> -----Original Message-----
>    
>> its really strange that's all, the system is easily managing to
>> keep up now but telnet to 25 is still really slow to respond,
>> like 5 - 10 seconds or it'll time out completely.  I noticed my
>> mailscanner sql db is getting a bit fat so maybe this is causing
>> some problem...
>>      
>
> Getting into the game late here, so maybe it's been asked already, but
> are you running a caching DNS server on the box?  That may help.
>
> Too, I've seen telnet spin it's wheels when there was no reverse zone
> for the source (i.e., your) host.  You don't actualy need a reverse
> entry for your host if you don't have one, but having even a single
> entry in the reverse zone allows the name server to return a 'not found'
> almost instantly, whereas it seems to wait to timeout if no reverse zone
> exists...
>    
Yes, that's exactly what I was going to suggest. If telnet 25 produces a 
long delay before giving a sendmail welcome prompt, it's a *sure* sign 
of trouble resolving DNS names, as sendmail does forward and reverse 
lookups on your address to work out who you are before it talks to you.

Jules

-- 
Julian Field MEng CITP CEng
www.MailScanner.info
Buy the MailScanner book at www.MailScanner.info/store

MailScanner customisation, or any advanced system administration help?
Contact me at Jules at Jules.FM

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