Qmail Support Forum

bopols · Guest

Hi!

Can you help me on this

In our network my boss (responsible for Microsoft Servers) has his ISA server giving an SMTP connection to my Qmail Server as an external IP.

My server has this 3000 to 4000 simultaneous SMTP connections whenever i would run #qmailctl start , running the service makes our
firewall's memory usage to its limit.

Are the problems connected to my Qmial server or my boss ISA firewall.

We already blocked the possible IPs which top most the SMTP connection to my Qmail server yet still if I would start again the service. SMTP connection reaches for 3000 to 4000 connections.

Is our SMTP (since an external IP) is used as a relay?
what possibilities/troubleshooting i could do to see if the
error is coming from my server.

thank you very much