550 relay for one domain but not the other

[csbdeady]

Hi

I'm attempting to solve something while my guru of a SysAdmin is on hols

I have two domains, lets call them x.com and y.com running from the same server. If I email x.com from yahoo.com then all is fine. However if I email y.com from yahoo (or anywhere else except internally within the y.com domain) I get:

<someone@y.com>: host mail.SomeISP.net[xx.xx.xx.xx] said: 550 You are not allowed to relay unless connected to SomeISP. Please use SMTP AUTH (Over TLS or SSL).

I have checked in my .conf file and the y.com domain is specified.

Where else should I be looking to resolve this?

In case it is relevant, I can email out from webmail.y.com (and webmail.x.com) without any problem.

Many thanks!
-Colin

 

[sedj]

In your host.mc record in /etc/mail - it may be called linux.mc, or mail.mc or something, you need to have an entry like this :

Cw localhost y.com x.com

and in your /etc/mail/access

you need lines like this :

172 RELAY
192.168 RELAY
any.other.IPs.or.domains.you.need.to.send.mail.to RELAY

You then need to rebuild the access.db like this

make

(there should be a MakeFile with reference to makemap)

and then restart sendmail

/etc/init.d/sendmail restart


--------------------------------------------------
Free Database Connection Pooling Software

http://www.primrose.org.uk

 

[sedj]

I forgot to say, you need to rebuild your sendmail.cf file :

m4 /etc/mail/host.mc > /etc/sendmail.cf

--------------------------------------------------
Free Database Connection Pooling Software

http://www.primrose.org.uk