9
votes
Accepted
Does it really help against spam to replace the "@" with "(at)" and similar practices?
Yes, different email obfuscation methods do work with varying degrees
of success.
But each has to be weighed with whether they affect the ability for your customers to communicate easily with you. I ...
- 1,079
3
votes
Block rank-checker.online
This isn't a direct answer to your question but to your problem:
Try a hostname filter on your Analytics account instead. Filter only for your domain. The only situation in which you'll get views ...
- 3,993
3
votes
How can I prevent a blogspot blog from misusing our company's toll free number?
I think you can try this Blogger form to report inappropriate blogger content
On that form, select the Unlisted phone number option and fill up all details.
I think Google don't consider toll free ...
- 5,507
3
votes
Accepted
Which email addresses should I activate for a website?
As a privacy/information security researcher, I disagree with the accepted answer's statement "No ... institution will try to legitimate communicate you to an email address that they will guess......
- 46
3
votes
Accepted
Spam, captcha - limit Contact Us page to country where you're doing business
If you were to limit just the Contact Us page to users from the US, this should not have a major impact on your SEO. You run into the issue of Google possibly not indexing the Contact Us page if it is ...
- 81
3
votes
Will redirecting to a mailto URL prevent spam bots from harvesting the email address?
No method of obfuscation is fool proof. But the value of getting an email address for sending spam may not be worth the effort to the bots. The more noval or proprietary the method of obfuscation the ...
- 2,246
2
votes
Accepted
What's the technical name of the captcha like thing which asks you to identify all the 'ice-cream' pictures?
This kind of spam prevention is usually provided by the reCAPTCHA service from Google. IMHO this is an advanced spam protection service based on the principles of CAPTCHA. While I do not think ...
- 206
2
votes
How to avoid getting spam through a website?
Use multiple techniques and you can catch all spammers:
honeypot as mentioned
speed (bots fill forms very quickly)
duplication (multiple text-fields like address plus comments)
links in the wrong ...
- 51
2
votes
Which email addresses should I activate for a website?
There is not a common or default email address that you should create for your website.
Speaking of experience, I suggest to make any e-mail account you want and publish it to your e-mail account, ...
- 573
2
votes
Accepted
Using user email address as "From Name" and domain email as sender in contact forms?
Yes, that's an acceptable practice. You could also append the users name and e-mail to the subject line or content if you want that information to be more visible to the recipient.
- 3,350
2
votes
New Domain got marked as spam after 3 mailer in Gmail
You don't need to send a high volume of emails to be marked as spam, actually, one of the most important things are the ratio between people that clicked on "marked as spam", successful deliveries and ...
- 126
2
votes
Accepted
How do email spam filters tell if a spam email was maliciously sent with intent to shutdown a real email address?
Spam filters cannot definitively tell that the second email is not from the legitimate user unless an SPF record exists to inform them of the only authorised servers for sending messages.
The ...
- 2,963
2
votes
Accepted
How do you deal with mass spam on MediaWiki?
If configured properly, your proxy will add the IP address of the user to the X-Forwarded-For header of the backend request. If $wgSquidServers (or $wgSquidServersNoPurge) is properly set, MediaWiki ...
- 1,289
2
votes
Block rank-checker.online
I've started using the following code:
RewriteCond %{HTTP_REFERER} ^http://.*[bad_referrer]\.com/ [NC]
RewriteRule ^(.*)$ – [F,L]
This looks for the referrer, in your case semalt.com, and creates a ...
- 121
2
votes
Can I block Tor users from sending spam on my form?
Instead of using an IP address blacklist (which is like playing a losing game of whack-a-mole), I might recommend one of two strategies for curtailing bot spam:
Strategy 1: Honeypot field
I use this ...
- 15.8k
2
votes
Accepted
Should I be worried by random/spam sites using my content as bait?
No.
It's an old question with different opinions, but usually there is no reason to invest energy dealing with such issues. It's especially true for already known websites with some reputation.
Read ...
- 166
2
votes
How to avoid e-mail spoofing
There is no way to prevent someone to spoof your address. The sender information shown in e-mails (the From: field) can be spoofed easily. But usually, mail clients (like gmail) have logic to detect ...
- 1,101
2
votes
Accepted
Anti-spam question and google recaptcha added for html contact form but still getting spam messages, how to completely stop?
It is impossible to completely stop spam submissions to your contact form. You can always get spam that is manually submitted. It is very possible to create a contact form that gets very little ...
- 98.4k
1
vote
What is the time interval that reputable search engines can hit pages of your website during a crawl?
Depends from website to website. If you have a news website with lots of fresh content getting posted hourly then you can expect more visits from search bots. If your pages are just static then you ...
- 304
1
vote
How to avoid e-mail spoofing
I am surprised by the accepted answer (which is largely incorrect. I'd downvote it, but I don't downvote where I answer as well). You can and should largely prevent spoofing by setting up SPF - ie ...
- 7,650
1
vote
Accepted
Is it the responsibility of large website owners to prevent backlink exploits?
It's in the interests of every site owner to prevent "backlink exploits". Any user-submitted content (unless perhaps if it is heavily moderated or submitted by trusted/senior members) is "untrusted". ...
- 4,297
1
vote
Spike in direct traffic - how to prevent bots
To make sure the traffic is being generated by bots, check if matches those indicators:
Low average session duration.
High bounce rate.
Mostly new visitors.
No goal completion.
In order to minimize ...
- 3,807
1
vote
Can blocking referer spam by black listing domains in google analytics have a positive effect on ranking due to reduced bounce rate ?
Nothing you do in Google Analytics can effect search performance. It is an analytics program that reports what has already happened. Your filtering referrer spam in analytics only effects the reports ...
- 32.8k
1
vote
Bot POST flood prevention
You have a couple of options here that may help:
1) Lock out very old browsers and user agents that don't make sense.
2) Load the form with ajax after JS detects mouse/tap movement and confirms ...
- 3,339
1
vote
Google Analytics — character limit on Filter Pattern field
Since these are exclude filters, you can create multiple filters that include referrer names up to the character limit. This is how I do it.
- 267
1
vote
Accepted
Spamassasin reports HTML_FONT_TINY with huge penalty, what is it?
As the author of the plugin suggested, this can be treated as a false-positive.
Our SpamAssassin checks on mail-tester trigger a lot of
false-positives, please ignore them.
- 173
1
vote
Does it really help against spam to replace the "@" with "(at)" and similar practices?
I strongly advise all sites I work on not to list email addresses in any form at all.
Yes, it helps reduce automated email collection (spam).
Yes, it helps prevent people/bots from determining the ...
- 2,077
1
vote
Possible email by Office365 - how to check?
To state the obvious you can test if office 365 is blocking your emails by creating a 30 day trial.
If your emails are being blocked then you need to address the issue why, which is how they are ...
- 32.9k
1
vote
My domain emails are marked as SPAM in Gmail? How to solve this issue?
Most probably your hosting company does not enable DKIM for your domain by default.
I assume that you are using CPANEL software. To enable DKIM on Cpanel see this video.
Read More about DKIM and why ...
- 105
Only top scored, non community-wiki answers of a minimum length are eligible