Cable Forum - View Single Post - Can't send emails from ONE of the computers on the network(it's not a firewall issue)

caph · 09-10-2009, 21:03

Jawar, the "500 unrecognised command" error will have been because you hit backspace at some point while you were typing that line. It might be worth another try but type really carefully - it works fine when I try using the same server. You need to be trying with smtp.wp.pl though, not with smtp.mbhost.pl because the error you get is specifically when you try to relay through smtp.wp.pl. Use your wp.pl email address as the MAIL FROM: address too, not the one with the domain you have registered with idhost.pl.

The fact that you can connect to smtp.mbhost.pl and talk with it means that you do not have a DNS problem, routing problem, or a firewall problem, which all helps in eliminating causes.

I'd still like to see the result of the telnet test through smtp.wp.pl though.

I think Sir John's Luke's suggested technet article is well worth going through. I've not seen that one before but I've bookmarked it myself for future reference.

09-10-2009, 21:03	#9
caph cf.geek Join Date: Jun 2007 Posts: 563	Re: Can't send emails from ONE of the computers on the network(it's not a firewall is Jawar, the "500 unrecognised command" error will have been because you hit backspace at some point while you were typing that line. It might be worth another try but type really carefully - it works fine when I try using the same server. You need to be trying with smtp.wp.pl though, not with smtp.mbhost.pl because the error you get is specifically when you try to relay through smtp.wp.pl. Use your wp.pl email address as the MAIL FROM: address too, not the one with the domain you have registered with idhost.pl. The fact that you can connect to smtp.mbhost.pl and talk with it means that you do not have a DNS problem, routing problem, or a firewall problem, which all helps in eliminating causes. I'd still like to see the result of the telnet test through smtp.wp.pl though. I think Sir John's Luke's suggested technet article is well worth going through. I've not seen that one before but I've bookmarked it myself for future reference.