Mar This is a different error than you were getting before. YOu were getting "user unknown in recipient table" before, which meant postfix could not figure out who you wanted to send mail to... or if it was even responsible for that domain / user's mail.
Now, you have a problem with "are you allowed to send me mail?". My first question is: did you overwrite all the config files you had before and use the ones specifically in the tutorial? I suspect not. This error comes about when the remote side is trying to authenticate with an authentication mechanism that the server side doesn't support. Here's why it works locally: When you send locally, you're sending via 127.0.0.1, which is clearly in your mynetworks (as it would be by default). This means you're doing IP authentication to send mail. Thus, it works as long as you're in your own sandbox. When you attempt to send mail from outside your machines "self made" sandbox of 127.0.0.1/8, then you are required to authenticate. Otherwise, spammers can use you as a relay. So, thus far, it's working properly. Now, on the remote side, when you try to authenticate, you're trying to use PLAIN (plaintext) ,and the server is rejecting that request. This tells me that your /etc/postfix/sasl/smtpd.conf file is incorrect, in valid, non-existent, or (at the very least) not setup the way the http://learnlinuxonline.com/servers/how-setup-linux-mail-server-debian-ubuntu dictates. If you double check that article, under the section How to Configure Saslauthd for our Linux Mail Server, you'll see that the second line of the configuration for the /etc/postfix/sasl/smtpd.conf line specifies: mech_list: PLAIN LOGIN Since your server is not allowing this, you need to check that out. Re-Read the section: Debugging Loggin Failures. If you are still trying to use your own configs, scrap them. Start with these tested configs, and you can modify it after you get it working. Double check every detail, and if it still doesn't work, post back here with your specific errors (error text required) as well as the relevant snipits from /var/log/syslog as applicable. Michael Munger, dCAP, MCPS, MCNPS, MBSS High Powered Help, Inc. Microsoft Certified Professional Microsoft Certified Small Business Specialist Digium Certified Asterisk Professional mich...@highpoweredhelp.com On 06/14/2015 04:53 AM, Martin S wrote: > OK, re-did it all using > http://learnlinuxonline.com/servers/how-setup-linux-mail-server-debian-ubuntu > > Still having the same problem, it works locally but not from the rest > of the world. E.g. using Postfix admin I can send mail to my account > but using the http://www.mail2web.com service I can't access the > account. > Mailing from my laptop I get Your SMTP server does not support PLAIN. > Choose a different authentication method. The server responded: "5.7.8 > Error: authentication failed: authentication failure > > Going to look at it when i get home > > /Martin S > > 2015-06-13 17:36 GMT+02:00 Michael Munger <mich...@highpoweredhelp.com>: >> It's easier to do it right the first time than it us to "unlock" your >> install. >> >> http://learnlinuxonline.com/servers/how-setup-linux-mail-server-debian-ubuntu >> >> >> Sent from my Verizon Wireless 4G LTE smartphone >> >> >> -------- Original message -------- >> From: Martin S >> Date:06/13/2015 3:51 AM (GMT-05:00) >> To: postfix-us...@cloud9.net >> Subject: newbie faq - sorry: recipient lists >> >> hi, >> >> I've set up a mailserver (as my hosting mail is crap) using this site: >> http://www.server-world.info/en/note?os=CentOS_7&p=httpd&f=13 I am >> having problems with recipients. No matter how I set up my recipeints >> (local or virtual) I get Recipient address rejected: User unknown in >> relay recipient table" >> >> Can someone point me to a reliable instruction for me to unfuck my >> installation? >> >> >> Regards, >> >> Martin S > > >
