sbrook
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join:2001-12-14
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 ·Rogers Hi-Speed
Host:
Rogers
Bell Canada
| reply to PXA
Re: E-Mail From Static IP Getting Caught By Some Spam Filters
There are three ways to end up on blocklists ...
1) Your IP is reported as a source of spam (various ways that may happen ... somebody maliciously reports you ... somebody has previously had the IP currently assigned to you and was reported as a spammer ... or you have spammed ... or you've accidentally been included such as the mail list described)
2) Your IP is in a block of IPs known to be a source of spam (some blocklists take the approach that if one or more IPs in a block are a source of spam and requests to the netblock owner to clean up the spam go unresolved, then they'll widen the net to the entire netblock)
3) Your static IP is in a block of IPs which has been marked as dynamically assigned. For example, say an ISP has the netblock 192.168.192.1 through ..255.255 and they reserved 255.1 through 255.255 themselves for static IPs, but didn't report that to IANA (the number authority). Users of the static IPs may face the problem that it appears that their IPs are dynamically assigned. (A sure potential source of spam and viruses)
4) Your static IP has no reverse DNS entry so it cannot be confirmed as the name of the mail server. Lots of recipient SMTP servers will reject mail if it cannot confirm the originating connection IP with the name of the server it's declared to be from.
The bottom line is that the cost to you to deal with this problem is probably far more than the cost of having a reliable SMTP mail submission server on a host somewhere. Many webhosting plans can service your needs for only a few dollars a month.
The alternative that many small companies do is to have a backup email service from some of the freemail servers "just in case" if there are only a few mails that bounce this way. |
