Re: Need real examples of `no resolvable FQDN' host sending thru smtp relay

2021-01-13 Thread Viktor Dukhovni
On Mon, Jan 11, 2021 at 12:18:15PM -0500, Harry wrote: > Where can I find real examples of /etc/postfix/main.cf setup on host > with no resolvable FQDN relaying throu smtp Smarthost with > authentication? http://www.postfix.org/SOHO_README.html http://www.postfix.org/SOHO_README.html#fant

postfix with smtp auth on non fqdn host

2021-01-13 Thread Harry
Setup: New install of ubuntu-20.10 Internet host on home lan with no real FQDN postfix ver. 3.5.6 I'm having a heck of a time getting anywhere with a postfix installation. I've filled out the main.cf several different ways and added the passwd hash for smtp auth of a SmartHost but instead of posti

Need real examples of `no resolvable FQDN' host sending thru smtp relay

2021-01-13 Thread Harry
Where can I find real examples of /etc/postfix/main.cf setup on host with no resolvable FQDN relaying throu smtp Smarthost with authentication? I've been experimenting; have setup sasl user password authtication. Hashed it with postmap, encluded the necessay smtp statements and etc in main.cf I'

Re: Gateway to Internal Server random "Connection refused"

2021-01-13 Thread Wietse Venema
Nikolaos Milas: > connect to vmail2.noa.xxx[2001:648:2011:15::xxx]:25: Connection refused; This is a TCP-level problem. The remote server's TCP/IP stack, or some middle box, is refusing connections at the TCP level. All Postfix can do is make fewer connections. To reduce connection concurrency

Gateway to Internal Server random "Connection refused"

2021-01-13 Thread Nikolaos Milas
Hello, We are building a new mail gateway server (on CentOS 8), which is running postfix (v3.5.8) from the GhettoForge Repo. I noticed the following problem: Sometimes the server seems to not be able to connect to our main mail server (Postfix v3.2.5) to verify recipients; for example: Jan