Recipient address from my MTA.

[Dmitry]

Some MTA refuse to take mail from my server therefore that can not check box of the sender on existence.

> telnet localhost 25
Trying ::1...
telnet: connect to address ::1: Connection refused
Trying 127.0.0.1...
Connected to localhost.cit-network.net.
Escape character is '^]'.
220 myserver.ru ESMTP Exim 4.62 Thu, 22 Feb 2007 09:26:57 +0300
RCPT TO: mymail@myserver.ru
503 sender not yet given

As I can solve a problem?

P.S. Sory for my English.

[jlasman]

Your test is always going to fail becaue you're not doing the smtp protocol correctly; you need to preceed rcpt to with either helo or ehlo and then mail from.

Your domain cit-network.net doesn't resolve so it's unlikely any other server will accept email from it.

Jeff