[geeks] ping JFogg re: e-mails, ping2 question...

[Greg A. Woods]

[ On Friday, June 14, 2002 at 11:50:41 (-0400), Andrew Weiss wrote: ]
> Subject: [geeks] ping JFogg re: e-mails, ping2 question...
>
> ping 1: need to know it there's a robot providing your list responses :-)
> 
> ping 2: Does anyone know if the domain optonline.net is on a spam 
> black-list?  I have a friend with two e-mail addresses, and everything I 
> send to one erols.com gets through as well as back to me from that 
> account.  The same don't work for his optonline.net account which fails 
> to send mail to me as well as receive mail from me.

I don't know for sure about all black-lists (though I do know their MX
hosts are not listed in any RBLs I use)

However they have VERY broken DNS for their MX records:

	$ host -t mx optonline.net
	optonline.net           MX      2 mx2.optonline.net
	optonline.net           MX      5 mail-hub.optonline.net
	 !!! optonline.net MX host mail-hub.optonline.net is not canonical
	optonline.net           MX      10 mail-relay.optonline.net
	 !!! optonline.net MX host mail-relay.optonline.net is not canonical
	optonline.net           MX      2 mx1.optonline.net


Those errors may cause several different mailers (not _NOT_ including
mine -- I only care that at least one MX is valid) to refuse to accept
mail with that domain in the SMTP envelope sender address.

-- 
								Greg A. Woods

+1 416 218-0098;  <gwoods at acm.org>;  <g.a.woods at ieee.org>;  <woods at robohack.ca>
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