How to avoid spam?

[Piru]

@glwxxx

There is really no way to avoid getting spam. Once your address has been added to the spamlists, it will stay there forever.

The real solution is to use some good spam filter, such as spamassassin.

[Piru]

@glwxxx

It really isn't. Harvesters are smart enough to convert such construct to '@' and '.'.

And anyway, at some point some friend or relative who you've exchanged email with will have a virus or other malware infection, and often the system is harvested for email addresses... So, the only way to stay totally spam free would be to never use the address at all.

[Piru]

@glwxxx

Are you talking about "robotic" or human harvesters?

Robotic.

[Piru]

@glwxxx

I'd be surprised if the harvesters didn't try decoding the html encodings...

[Piru]

@Zac67

IMHO it shouldn't be neccessary to filter for spam (chance of false positives and negatives) but instead block based on destination by the ISP. Our mail server uses various external SPAMBL, it's own black list (IP and host name pattern) and dial up detection (via host name) with extremely high success.

SpamAssassin has this aswell, btw.

Small example of SA content analysis:

Code: [Select]


Content analysis details:   (27.8 points, 5.0 required)
 
 pts rule name              description
---- ---------------------- --------------------------------------------------
 2.0 TRADING_ALERT_5        BODY: Talks about shares
 0.1 HTML_50_60             BODY: Message is 50% to 60% HTML
 0.0 HTML_MESSAGE           BODY: HTML included in message
 3.5 BAYES_99               BODY: Bayesian spam probability is 99 to 100%
                            [score: 1.0000]
 1.5 RAZOR2_CF_RANGE_E8_51_100 Razor2 gives engine 8 confidence level above 50%
                            [cf: 100]
 0.5 RAZOR2_CHECK           Listed in Razor2 (http://razor.sf.net/)
 0.5 RAZOR2_CF_RANGE_51_100 Razor2 gives confidence level above 50%
                            [cf: 100]
 0.2 DNS_FROM_RFC_ABUSE     RBL: Envelope sender in abuse.rfc-ignorant.org
 1.6 RCVD_IN_BL_SPAMCOP_NET RBL: Received via a relay in bl.spamcop.net
               [Blocked - see <http://www.spamcop.net/bl.shtml?218.65.219.13>]
 1.7 DNS_FROM_RFC_POST      RBL: Envelope sender in postmaster.rfc-ignorant.org
 1.6 URIBL_SBL              Contains an URL listed in the SBL blocklist
                            [URIs: gloriadj.com]
 3.8 URIBL_AB_SURBL         Contains an URL listed in the AB SURBL blocklist
                            [URIs: gloriadj.com]
 4.1 URIBL_JP_SURBL         Contains an URL listed in the JP SURBL blocklist
                            [URIs: gloriadj.com]
 2.1 URIBL_WS_SURBL         Contains an URL listed in the WS SURBL blocklist
                            [URIs: gloriadj.com]
 4.5 URIBL_SC_SURBL         Contains an URL listed in the SC SURBL blocklist
                            [URIs: gloriadj.com]