[GLLUG] postfix relayhost

[Eric Hendrickson]

Michael George wrote:
> I have reached my tipping point...  I have been letting my home system 
> do final delivery of all my mail sent from my home account.  However, 
> there are some places that will not accept mail from an IP address in 
> a dynamic range of IPs.
>
> I run postfix and I can set the relayhost to send all mail through my 
> IPSs mail system, but it still doesn't seem to work.  I get:
>
> Could not deliver message to the following recipient(s):
>
> Failed Recipient: linux-user at egr.msu.edu
> Reason: Remote host said: 554 5.7.1 Service unavailable; Sender address
> +[george at mutualdata.com] blocked using dsn.rfc-ignorant.org; Not 
> supporting null
> +originator (DSN)
>
> I can successfully send mail to my idealso.com account through the 
> relay host, but the mail to egr.msu.edu fails whether I use the 
> relayhost or not.  What do I need to change in my config so that the 
> mail can be sent?
>

Evidently egr.msu.edu is using rfc-ignorant.org as a blacklist. 
rfc-ignorant.org believes that mutualdata.com does not accept null 
sender. I did a quick check and it looks as if it does in fact accept 
null sender. You can email admin at rfc-ignorant.org to request a followup 
test and removal from their list.

This page shows mutualdata.com in the blacklist:
http://www.rfc-ignorant.org/tools/lookup.php?domain=mutualdata.com

And this one shows how to get yourself out:
http://www.rfc-ignorant.org/policy.php

Cheers,

Eric