Cable Forum - View Single Post - Using smtp.ntlworld.com as smarthost fails

Rich99 · 14-11-2006, 12:12

I have postfix installed on a fresh Ubuntu 6.10 box. The ubuntu config generated a setup that should receive mail by smtp & send it via smtp.ntlworld.com (ie a smarthost). However when I try & send mail (in this case directly from the ubuntu machine using 'mail') I get the following error message:

Nov 13 21:20:06 ubuntu-server postfix/smtp[4950]: B6FE16D818B: to=<me@work.ac.uk>, orig_to=<root@ubuntu-server>, relay=smtp.ntlworld.com[81.103.221.11]:25, delay=7.2, delays=0.01/0/7.2/0.03, dsn=5.0.0, status=bounced (host smtp.ntlworld.com[81.103.221.11] said: 550 relaying mail to work.ac.uk is not allowed (in reply to RCPT TO command))

From my windows machine which is behind the same NAT box, I can send mail from outlook via the smtp.ntlworld.com server with no problems. Any ideas why postfix can't send via the ISP smtp server? I tried swapping postfix for exim4 on this ubuntu machine & the same problem occurred, so it may not be postfix specific. I've posted to the postfix mailing lists in case it could be a postfix problem, but I wondered if anyone knew whether there could be anything on the ntlworld side of things effecting this?

14-11-2006, 12:12	#1
Rich99 Inactive Join Date: Dec 2005 Posts: 14	Using smtp.ntlworld.com as smarthost fails I have postfix installed on a fresh Ubuntu 6.10 box. The ubuntu config generated a setup that should receive mail by smtp & send it via smtp.ntlworld.com (ie a smarthost). However when I try & send mail (in this case directly from the ubuntu machine using 'mail') I get the following error message: Nov 13 21:20:06 ubuntu-server postfix/smtp[4950]: B6FE16D818B: to=<me@work.ac.uk>, orig_to=<root@ubuntu-server>, relay=smtp.ntlworld.com[81.103.221.11]:25, delay=7.2, delays=0.01/0/7.2/0.03, dsn=5.0.0, status=bounced (host smtp.ntlworld.com[81.103.221.11] said: 550 relaying mail to work.ac.uk is not allowed (in reply to RCPT TO command)) From my windows machine which is behind the same NAT box, I can send mail from outlook via the smtp.ntlworld.com server with no problems. Any ideas why postfix can't send via the ISP smtp server? I tried swapping postfix for exim4 on this ubuntu machine & the same problem occurred, so it may not be postfix specific. I've posted to the postfix mailing lists in case it could be a postfix problem, but I wondered if anyone knew whether there could be anything on the ntlworld side of things effecting this?