mailing external accounts

[warrenj1]

I have tried searching through the forum for this problem but was unable to find any info. I recently got Scalix working (community edition) and internally between existing users traffic is completely fine. I can also send emial to the Scalix server and it is received without a problem. If I try to send to a external address I get the email returned with the following information:

Code: Select all

The original message was received at Mon, 3 Jul 2006 18:11:08 -0500
from localhost [127.0.0.1]

   ----- The following addresses had permanent fatal errors -----
<<my user name>@comcast.net>
    (reason: 550-xx.x.xxx.xx blocked by ldap:ou=rblmx,dc=comcast,dc=net)

   ----- Transcript of session follows -----
... while talking to gateway-a.comcast.net.:
>>> MAIL From:<user@new.domain.org> SIZE=1554 ENVID=15703940.1151968260684.JavaMail.root@xxxxxxx.xxxxxxx.xxxxx.org RET=FULL
<<< 550-24.0.113.75 blocked by ldap:ou=rblmx,dc=comcast,dc=net
<<< 550 Comcast.net subscribers are not permitted to directly connect to this mail server. If you are a Comcast Commercial Services customer and need support, please contact support_biz@cable.comcast.com
554 5.0.0 Service unavailable


To me it looks like my ISP is blocking the SMTP port traffic based on my user account. Am I correct? If so can I redirect the traffic through another port? if yes, any info on how would be greatly appreciated.

Thanks

[ScalixSupport]

What I believe comcast is saying is that you're a customer and they don't allow their customers to connect to gateway-a.comcast (and likely gateway-r and gateway-s.comcast.net, basically their MX servers). Assuming you're a Comcast Commercial Services customer I would recommend you contact the email address they listed and ask them which server you should be sending through. Once you have that, you can change your sendmail smarthost to be that server. You may have authenticate to relay mail through that server, so you should search here on how to authenticate with sendmail.

Thanks,
Rachel

[warrenj1]

Thanks for the help. That is what I thought. The problem is I am a residential customer, not a commercial customer. Is there a way around that check?

[btisdall]

Presumably you can already send mail directly from a desktop client using Comcast's residential servers - if so, you can also relay through them using sendmail.

From looking at Comcast's website it appears you'll need to both use port 587:

http://www.sendmail.org/faq/section3.html#3.39

& authenticate:

http://www.sendmail.org/~ca/email/auth.html

(see: 'Using sendmail as a client with AUTH')

HTH.