On Wed, Aug 28, 2013 at 9:35 AM, Michael Richter <[email protected]> wrote:
> mrichter@CL-LINUX-3OG-MR:~$ telnet mxzhh.bluewin.ch 25 > Trying 195.186.227.50... > Connected to mxzhh.bluewin.ch. > Escape character is '^]'. > 421 4.4.5 Service unavailable, concurrency limit reached. > Connection closed by foreign host. > > Trying 195.186.227.50... > telnet: connect to address 195.186.227.50: Connection refused > telnet: Unable to connect to remote host > > > This with all 3 MX: > > bluewin.ch. 88 IN MX 10 mxbw.bluewin.ch. > bluewin.ch. 88 IN MX 42 mxzhb.bluewin.ch. > bluewin.ch. 88 IN MX 42 mxzhh.bluewin.ch. > > > I just wanted to verify this and the very first time it worked: # telnet mxzhh.bluewin.ch 25 Trying 195.186.227.50... Connected to mxzhh.bluewin.ch. Escape character is '^]'. 220 zhhdzmsp-mxin28.bluewin.ch ESMTP Service (Swisscom Schweiz AG) ready But right after I got the same error as you: # telnet mxzhh.bluewin.ch 25 Trying 195.186.227.50... Connected to mxzhh.bluewin.ch. Escape character is '^]'. 421 4.4.5 Service unavailable, concurrency limit reached. Connection closed by foreign host. But then again... # telnet mxbw.bluewin.ch 25 Trying 195.186.99.50... Connected to mxbw.bluewin.ch. Escape character is '^]'. 220 zhbdzmsp-mxin15.bluewin.ch ESMTP Service (Swisscom Schweiz AG) ready # telnet mxbw.bluewin.ch 25 Trying 195.186.99.50... telnet: Unable to connect to remote host: Connection refused # telnet mxzhb.bluewin.ch 25 Trying 195.186.99.50... Connected to mxzhb.bluewin.ch. Escape character is '^]'. 220 zhbdzmsp-mxin19.bluewin.ch ESMTP Service (Swisscom Schweiz AG) ready Seem to be very "random" problems: - 421 4.4.5 Service unavailable, concurrency limit reached. - Unable to connect to remote host: Connection refused - Sometimes connection works fine
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