For me, it's a yes to 4 criteria (our EHLO host id does not explicitly contain smtp or
mail).... Every single time I've run into problems, so far, where my clients have not
received our email or we have had mail rejections, it's been a misconfiguration of
email/spam software at the receiving end.
It's hard to quantify the benefits of having an SPF record - although I hope its
helping prevent our IP from being RBL'd due to abuse by others - but its easy to see
the admin costs of having one and having to constantly chase up problems.
From: nznog-bounces(a)list.waikato.ac.nz [mailto:email@example.com] On Behalf
Of SIMON WALKDEN
Sent: Thursday, 22 July 2010 6:11 p.m.
To: Mark Wakefield
Subject: Re: [nznog] SPF Mail rejection
I've seen a lot of clients' outbound mail rejected in the last 12 months due to
SPF issues; particularly mail being delivered to secureMX, or Xtra. The plan of attack was
1. do they appear on any RBL's? (self explanatory, I know, just thought I'd list
it) 2. does the HELO ID of their server match the MX record for the domain?
3. does the MX record (and HELO ID) contain the terms 'smtp' or 'mail'?
(strange I know, but it's made a difference) 4. does a PTR record exist for the mail
5. does the domain have a valid SPF record?
If all these criteria are met, you really shouldn't have any problems passing go &