Re: Postfix usage problem

[Ralf Hildebrandt <Ralf.Hildebrandt@xxxxxxxxxx>]

* Malcom Kemp <mkemp@xxxxxxxxxxxxx>:

> My internet service provider has recently tightened up security by
> requiring a login to the SMTP server.  I have set up everything I
> know how to do, but get the following message when I try to send to
> an address that is outside my mail domain:

Add the IP of the relay you need to use to debug_peer_list to get
verbose logging

> relayhost = mail.bellsouth.net
> mail.bellsouth.net            <mailbox>:<password>

<xxxxx@xxxxxxxxxxxxx>: host mx00.mail.bellsouth.net[205.152.59.32] said:

    550 .net 022: Your current IP address is not allowed to relay to
             bellsouth.com Solution: Connect using BellSouth Internet
             Service. (in reply to RCPT TO command)

Note that mx00.mail.bellsouth.net != mail.bellsouth.net

Solution:

# host -t mx mail.bellsouth.net
mail.bellsouth.net mail is handled by 0 mx01.mail.bellsouth.net.
mail.bellsouth.net mail is handled by 0 mx00.mail.bellsouth.net.

Aha. So:

relayhost = mail.bellsouth.net

mx01.mail.bellsouth.net            <mailbox>:<password>
mx00.mail.bellsouth.net            <mailbox>:<password>
    
-- 
Ralf Hildebrandt                                 Ralf.Hildebrandt@xxxxxxxxxx
http://www.arschkrebs.de/postfix/                Tel. +49 (0)30-450 570-155
bringing you boring signatures for 17 years