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A comment on Ask HN: Gmail alternatives?. Parent comment

Re:Ask HN: Gmail alternatives? by keyist on Friday February 12, 2010 @05:12PM (#1121944)
I haven't experienced getting added back to a blacklist off a significant webmail host after being taken off one. Once your IP is in the clear, it'd take some abuse to be put back (anecdotal). These 3 steps usually get me unblocked if starting with a bad IP:

1. Set up reverse DNS for your IP address

2. Publish an SPF record

3. Check the Spamhaus lists http://www.spamhaus.org/query/bl?ip=1.2.3.4 and request removal if your IP address is on them.

As an addendum to grandparent: extremely comprehensive guide to postfix + dovecot here: http://workaround.org/ispmail

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Re:Ask HN: Gmail alternatives? by eli on Friday February 12, 2010 @06:59PM (#1122193)
Spamhaus is one list. There are hundreds. (See http://www.dnsbl.info/dnsbl-list.php for starters) Some are nearly impossible to get off of.
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Re:Ask HN: Gmail alternatives? by wheels on Friday February 12, 2010 @07:39PM (#1122259)
Been there, done that, didn't work. We don't even know why GMail was black-holing our mails, but we did everything on their suggested list for getting out of the world-o-pain and still often our mails were landing in the spam folder, hence the switch to SendGrid.
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