550 Forged HELO with postfix on debian lenny

Posted by Martin Ahrer on Server Fault See other posts from Server Fault or by Martin Ahrer
Published on 2010-04-13T20:26:56Z Indexed on 2010/04/13 20:33 UTC
Read the original article Hit count: 530

Filed under:

postfix

|

debian-lenny

I'm running postfix on a debian lenny system. sending mail in general works without any problems. however some recipent mail systems return an error and I can't get a clue what is causing the problem. So far I suspect that this is either postfix setup itself or the reverse dns resolution.

The mail server is running on a virtual server from my service provider.

running the command hostname is returning my.domain however running host <ip-address> is returning some alias from the virtual server system. now i'm not quite sure if that is causing my problem????

The mail system

<recipient-mail>: host mx0.recipient.domain[xxx.xxx.xxx.xxx] refused to talk to me:
550 Forged HELO: you are not my.domain

Reporting-MTA: dns; my.domain
X-Postfix-Queue-ID: 6A1135B08002
X-Postfix-Sender: rfc822; [email protected]
Arrival-Date: Tue, 13 Apr 2010 17:50:36 +0200 (CEST)

Final-Recipient: rfc822; recipient-mail
Action: failed
Status: 5.0.0
Remote-MTA: dns; mx0.recipient.domain
Diagnostic-Code: smtp; 550 Forged HELO: you are not my.domain

© Server Fault or respective owner

Related posts about postfix

postfix: Temporary lookup failure

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have followed the tutorials step by step for installing and configuring postfix https://help.ubuntu.com/community/Postfix https://help.ubuntu.com/community/PostfixBasicSetupHowto I am trying to test the services to whether Temporary lookup failure error telnet localhost 25 250 2.1.0 Ok rcpt to:… >>> More
postfix with mailman

as seen on Server Fault - Search for 'Server Fault'
What should happen is that [email protected] should be delivered to that users inbox on localhost, user@localhost. Thunderbird works fine at reading user@localhost. I'm just using a small portion of postfix-dovecot with Ubuntu mailman. How can I get postfix to recognize the FQDN and deliver… >>> More
saslauthd + PostFix producing password verification and authentication errors

as seen on Server Fault - Search for 'Server Fault'
So I'm trying to setup PostFix while using SASL (Cyrus variety preferred, I was using dovecot earlier but I'm switching from dovecot to courier so I want to use cyrus instead of dovecot) but I seem to be having issues. Here are the errors I'm receiving: ==> mail.log <== Aug 10 05:11:49 crazyinsanoman… >>> More
centos postfix send email problem

as seen on Server Fault - Search for 'Server Fault'
Hello. I have a big problem with postfix. I can receive mail in webmin and outlook but I can't send (only on local I can - user to user). Dovecot is working just fine. Sendmail is disable. Please help me. postfix -n postfix: invalid option -- n postfix: fatal: usage: postfix [-c config_dir] [-Dv]… >>> More
Migrating users and mailboxes from postfix / Maildir to Postfix with Mysql backend

as seen on Server Fault - Search for 'Server Fault'
So I've got 60 or so users on a hand rolled postfix installation on openbsd and I'd like to move their mailboxes to our new mail server running iRedMail (postfix, vmail/mysql back end) Does anyone know of a good way to do this? Preferably a script I can run to keep syncing the users mailboxes as… >>> More

Related posts about debian-lenny

Where Debian Lenny stores initial ifconfig values?

as seen on Server Fault - Search for 'Server Fault'
With upgrade of VMWare Player I suddenly found my Debian Lenny VM not getting IP address. Some DHCP issue maybe, I don't know. So I have to set it manually every boot in Player window, via: ifconfig eth0 down ifconfig eth0 192.168.175.128 netmask 255.255.255.0 up I usually start up VM and then… >>> More
HISTCONTROL=ignoreboth not working Debian Lenny

as seen on Super User - Search for 'Super User'
Can anybody confirm if by setting the the following environmental variables under debian lenny will make previous history entries not to be saved. GNU bash, version 3.2.39(1)-release export HISTCONTROL=ignoreboth export HISTSIZE=500 I have added them to my /etc/bash.bashrc but I keep getting repeated… >>> More
Build Your Own Video Community With Lighttpd And FlowPlayer (Debian Lenny)

as seen on Internet.com - Search for 'Internet.com'
<b>Howtoforge:</b> "This article shows how you can build your own video community using lighttpd with its mod_flv_streaming module (for streaming .flv videos, the format used by most major video communities such as YouTube) and its mod_secdownload module (for preventing hotlinking… >>> More
Debian 5.0 (lenny) apt sources fail?

as seen on Server Fault - Search for 'Server Fault'
For the past few days, I couldn't update our apt-sources on Debian 5.0 (lenny). I get the following errors. W: Failed to fetch http://ftp.debian.org/debian/dists/lenny/main/binary-amd64/Packages 404 Not Found [IP: 130.89.148.12 80] W: Failed to fetch http://ftp.debian.org/debian/dists/lenny/contrib/binary-amd64/Packages… >>> More
Swiftfox (Firefox variant) is taking ages to load in Debian Lenny

as seen on Super User - Search for 'Super User'
Swiftfox (a Firefox variant) is taking ages to load in my Debian Lenny system. I have been using Swiftfox on several other Linux distributions without any problem; it works flawlessly on Arch, Fedora, Gentoo (my other OSes). But it's giving me trouble in Debian Lenny. I haven't yet found any clue… >>> More