send mail performance problem in AIX

Hi All,

Our application is designed to send the emails. we use standard C lib to send the mails using send() function. This works fine on Solaris,HP UX and windows, but on AIX the performance is very slow. it takes around 32 sec to send a simple mail whereas in Solaris 2-3 sec. I would like to know if there is any bug using the standard C lib or its a problem with AIX. One of our customer had critical problem with the performance, helping me early on this issue is appreciated.

Can you determin which step is time consuming? Connect , send data, or recv data from email server?

I'm sure it is not connect, howerver I'll check which step is taking time. Meanwhile do you know any known issues in AIX?