[HCoop-Help] HCoop SMTP Server and Spam

Adam Chlipala adamc at hcoop.net
Tue Apr 7 08:45:49 EDT 2009

Michal wrote:
> On http://wiki.hcoop.net/MemberManual/Email#SendingMail, it seems that
> we are discouraged from using the HCoop SMTP server to send outgoing
> mail (to mailboxes that HCoop doesn't host).

No one is doing serious spam filtering based on e-mail addresses; it's 
all based on server IP addresses, if anything.  I added the SPF record 
because Google documentation says they take SPF presence into account in 
deciding whether to blacklist server IPs.  I don't really care if 
spammers are spoofing @hcoop.net addresses, as I think any savvy 
spam-filtering system doesn't care, either.

Are you pointing out a flaw in the way I set up the SPF record, such 
that Google and others might trust our SMTP server(s) less as a result?

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