Comments on: Getting Sendmail to work with Rogers and Smarthost settings

By: Matt

Matt — Tue, 11 Nov 2008 05:03:43 +0000

Good point yeah. I bet it’s GEOIP.

I didn’t mean you don’t have to authenticate, just that the server you’re authenticating to must be the same in the authinfo config (however, like I said, I haven’t tried this, that’s just what I got from the posts).

Thanks!
Matt

By: Ash Christopher

Ash Christopher — Tue, 11 Nov 2008 03:05:33 +0000

Matt, both smtp-rog.mail.yahoo.com and smtp.broadband.rogers.com allow access to the cluster of mail servers that Rogers uses. When connecting to smtp.broadband.rogers.com you are infact connecting to smtp-rog.mail.yahoo.com – it is just a CNAME.

21:58 ash@galactica:[~]> dig smtp.broadband.rogers.com
–snip–
;; ANSWER SECTION:
smtp.broadband.rogers.com. 3402 IN CNAME ssmtp.bloor.is.net.cable.rogers.com.
ssmtp.bloor.is.net.cable.rogers.com. 86202 IN CNAME smtp-rog.mail.yahoo.com.
smtp-rog.mail.yahoo.com. 1602 IN A 206.190.36.18

21:59 ash@galactica:[~]> dig smtp-rog.mail.yahoo.com
–snip–
smtp-rog.mail.yahoo.com. 1526 IN A 206.190.36.18

When testing connections to either dns entry, you get access to any number of smtp servers in their farm.

smtp105.rog.mail.re2.yahoo.com
smtp111.rog.mail.re2.yahoo.com
smtp126.rog.mail.re2.yahoo.com

and so on. I don’t believe one or the other has anything to do with authentication per se. You will still need to authenticate.

I do wonder though if smtp.broadband.rogers.com resolves depending on your geographic location (just hazarding a guess based on the CNAME ssmtp.bloor.is.net.cable.rogers.com).

By: Matt G

Matt G — Tue, 11 Nov 2008 02:38:43 +0000

Hi Ash,

I believe it was from the additional information post at the bottom of the article. They mention in the posts there:

Nov 2 11:53:56 pbx sendmail[2917]: mA2Gru4B002915: to=, ctladdr= (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=120318, relay=smtp-rog.mail.yahoo.com. [206.190.36.18], dsn=5.0.0, stat=Service unavailable

The delivery attempt went to the server smtp-rog.mail.yahoo.com.
>

So, I’m assuming that while you usually use smtp.broadband.rogers.com, the server actual returns smtp-rog.mail.yahoo.com so it won’t match your sendmail configuration for authinfo when it tries to connect.

You could always try each and if one doesn’t work then you know

HTH,
Matt

By: Ash Christopher

Ash Christopher — Tue, 11 Nov 2008 01:47:28 +0000

Hi Matt,

Thanks for the link. I used my setup with rogers without problems for a few months before switching to another service provider due to what I feel was very bad customer service (I am with Teksavvy now – definitely recommend).

Did Hugo mention why he recommended using smtp-rog.mail.yahoo.com over the others listed at http://www.dslreports.com/faq/rogers/5_Email#5090 ?

Ash Christopher