[Gllug] Qmail update - now titled "how do I turn off some of the authentictation"

[Andy McGarty]

Hi,

Following on from my email about problems connecting to a qmail server  
 from ADSL I did some checks using DIG to check the reverse DNS and I get a  
response in milliseconds.

So I then did a tcpdump looking for traffic from the IP address I was  
sending mail from and notice the following:

17:38:52.898030 IP mymailhostIP.57422 > theADSLIP.auth: S  
3456474250:3456474250(0) win 5840 <mss 1460,sackOK,timestamp 941018420  
0,nop,wscale 2>

Repeated about 4 times, taking about 30 seconds before it then sends the  
SMTP HELO message.

I guess as the adsl router isn't replying to requests on the auth port  
then it tries a few times then gives up?

Does anyone know how to stop qmail (which I presume is doing it) from  
initiating this enquiry?

To stop mail relay, users have to authenticate using smtp authentication,  
so I'm happy its reasonably secure.


Cheers

Andy


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