> On Sep 14, 2015, at 8:11 AM, G. Miliotis <corf...@elementality.org> wrote: > > Hello everyone, > > We've just moved someof our MXs to a new IP and it turns out we didn't plan > this very well. > > Microsoft has the whole new range blacklisted (Getting SC-001 errors for > 136.243.92.253; 136.243.92.252; 136.243.92.216). The troubleshooting form > provides no real feedback and I couldn't get to a human.
I'm assuming those three IP addresses are for smarthosts that send outbound mail for you and your customers. > > Our MX is low volume (~1000mails / monthly) but many small businesses depend > on us for mail and the heat is being turned up. > > What is the correct way to handle this transition? Is there any microsoft > contact here to contact me off list? Any advice/help would be greatly > appreciated. To start with, check your DNS has been updated to match your new smarthosts, particularly SPF and MX records. For example, elementality.org has an MX record that points solely at 136.243.92.252, and an SPF record that says "v=spf1 mx -all", so any mail for that domain sent from either of the other two smarthosts will hard fail SPF and be considered suspicious, at best, by recipients. elementality.gr is similar. (As an aside, thanks for including the relevant IP addresses in your question! You'd be amazed at the number of people who refuse to share that info.) Cheers, Steve -- Having an Email Crisis? (800) 823-9674 Steve Atkins - Word to the Wise - st...@wordtothewise.com _______________________________________________ mailop mailing list mailop@mailop.org http://chilli.nosignal.org/mailman/listinfo/mailop
