https://performiq.com/kb/index.php?action=history&feed=atom&title=Testing_SMTP_Connections 2026-05-18T19:46:17Z Revision history for this page on the wiki MediaWiki 1.37.1 https://performiq.com/kb/index.php?title=Testing_SMTP_Connections&diff=2525&oldid=prev 2008-08-19T08:48:23Z

<p>New page: =XXX= &lt;pre&gt; polaris:/etc/bind/zones# telnet 12.13.14.15 25 Trying 12.13.14.15... Connected to 12.13.14.15. Escape character is &#039;^]&#039;. 220 xxx.xxx.net.au ESMTP Postfix (Debian/GNU) HELP xxx...</p> <p><b>New page</b></p><div>=XXX=<br /> <br /> &lt;pre&gt;<br /> polaris:/etc/bind/zones# telnet 12.13.14.15 25<br /> Trying 12.13.14.15...<br /> Connected to 12.13.14.15.<br /> Escape character is &#039;^]&#039;.<br /> 220 xxx.xxx.net.au ESMTP Postfix (Debian/GNU)<br /> HELP xxx.xxx.com.au<br /> 502 5.5.2 Error: command not recognized<br /> HELO xxx.xxx.com.au<br /> 250 xxx.xxx.net.au<br /> RECT To:&lt;xxx@xxx.net.au&gt;<br /> 502 5.5.2 Error: command not recognized<br /> FROM From:&lt;plh@performiq.com.au&gt;<br /> 502 5.5.2 Error: command not recognized<br /> ?<br /> 502 5.5.2 Error: command not recognized<br /> HELP<br /> 502 5.5.2 Error: command not recognized<br /> RCPT To:&lt;xxx@xxx.net.au&gt;<br /> 503 5.5.1 Error: need MAIL command<br /> MAIL From:&lt;xxx@xxx.com.au&gt;<br /> 250 2.1.0 Ok<br /> RCPT To:&lt;xxx@xxx.net.au&gt;<br /> 250 2.1.5 Ok<br /> DATA<br /> 354 End data with &lt;CR&gt;&lt;LF&gt;.&lt;CR&gt;&lt;LF&gt;<br /> asdasdasdasd<br /> asdasdsdasd<br /> <br /> .<br /> 250 2.0.0 Ok: queued as E8036E7C42<br /> <br /> 500 5.5.2 Error: bad syntax<br /> QUIT<br /> 221 2.0.0 Bye<br /> Connection closed by foreign host.<br /> &lt;/pre&gt;<br /> <br /> [[Category:SMTP]]</div>

PeterHarding