Re: Re: Postfix smtp freezing

[Jason Ross <jross@xxxxxxxxxxxx>]

Mail .medvoice.com actually resolves to the mail server inside through port forwarding.
It's not really named that just everything going to the mail ports ends up there.
Would DNS still be an issue for sending internal mail.
I ran top during one of these unresponsive email spats and noticed that there are no smtp processes listed.
If I wait long enough or if i restart posfix they come back.
Is there some where I can look to determine if they a timing out and having issues restarting?

-jason



Lanny Marcus wrote:

On 09 August 2007, Ken Price <kprice@xxxxxxxxxxxxxx> wrote:
<snip>
  

I'll give my two cents and retire for the evening.  I've tried  
multiple times from 3 different locations (Atlanta & Seattle) to  
connect to MAIL.MEDVOICE.COM on port 25 ... which I'm assuming is your
problem server.  I get inconsistent results.  Half the time I get a  
near immediate (<2 seconds) 220 prompt.  The rest of the time I get >
10 seconds or timeouts.

    

I tried his SMTP this morning and it was either OK or timeout.

  

3)  Who does your DNS?  Looks like Qwest is authoritative for your  
domain, do you use their recursive DNS servers too?  If yes, this  
could be a problem.  If you don't already, RUN YOUR OWN RECURSIVE DNS
for your server!!
Bandwidth and DNS are the likely culprits.
    

Possibly someone who knows a *lot* more about DNS management than I do
can look at his DNS management? I have the ttl (IN) for "A" and "PTR" at
3600s for my web site. Faster, if one changes IP address. He has those
ttl at 100000s.

Possibly he could use the IP address more, in DNS management?

I've had the SMTP service die, over the past 68 months, approximately
10-15 times, on a RH server (shared hosting). Never daily. Services and
processes sometimes die mysteriously, but probably not on a daily basis.

In the WHOIS record:

  

Name Server: AUTHNS3.STTL.QWEST.NET
   Name Server: AUTHNS1.MPLS.QWEST.NET
   Name Server: AUTHNS2.DNVR.QWEST.NET
    

Possibly those should be in different order? (I have mine, NS1, NS2, NS3, NS4 from top to bottom)


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-- 
Jason Ross
Technical Operations Analyst
MedVoice International, LLC
Tel: 480-481-9292
Toll Free: 800-720-1151
Fax: 480-481-9712

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