Spam Filter ISP Forums : Reject emails starting with numbers

Spam Filter ISP Forums : Reject emails starting with numbers https://www.logsat.com/spamfilter/forums/ Wed, 20 May 2026 13:07:04 +0000 Mon, 13 Dec 2004 16:20:00 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.04 360 https://www.logsat.com/spamfilter/forums/RSS_post_feed.asp?TID=4652 <![CDATA[Spam Filter ISP Forums]]> https://www.logsat.com/spamfilter/forums/forum_images/web_wiz_forums.png https://www.logsat.com/spamfilter/forums/ <![CDATA[Reject emails starting with numbers : What if I want to block any incoming...]]> https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=4652&PID=4750&title=reject-emails-starting-with-numbers#4750 Author: Guests
Subject: 4652
Posted: 13 December 2004 at 4:20pm

What if I want to block any incoming email with FROM EMAIL has a number?]]> Mon, 13 Dec 2004 16:20:00 +0000 https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=4652&PID=4750&title=reject-emails-starting-with-numbers#4750 <![CDATA[Reject emails starting with numbers : Ok thanks for helping me get started...]]> https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=4652&PID=4658&title=reject-emails-starting-with-numbers#4658 Author: CyberBob
Subject: 4652
Posted: 30 November 2004 at 4:55pm

Ok thanks for helping me get started but this is tested and working:

([0-9][a-z]+@mydomain.com)

I saw you did a double capture, do I need to?

Thanks for the help!!

Bob

]]> Tue, 30 Nov 2004 16:55:00 +0000 https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=4652&PID=4658&title=reject-emails-starting-with-numbers#4658 <![CDATA[Reject emails starting with numbers : Now we aren't capturing anything?...]]> https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=4652&PID=4657&title=reject-emails-starting-with-numbers#4657 Author: CyberBob
Subject: 4652
Posted: 30 November 2004 at 3:30pm

Now we aren't capturing anything? Everything works

They way I read this I thought it was ONLY looking for numbers so I thought for sure 1@mydomain.com would be blocked but it went through also?

]]> Tue, 30 Nov 2004 15:30:00 +0000 https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=4652&PID=4657&title=reject-emails-starting-with-numbers#4657 <![CDATA[Reject emails starting with numbers : ((\D+?@mydomain\.com)) this should...]]> https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=4652&PID=4656&title=reject-emails-starting-with-numbers#4656 Author: keizersozay
Subject: 4652
Posted: 30 November 2004 at 2:56pm

(([0-9]\D+?@mydomain\.com))

this should work. again, I have not tested this.

here is the explanation

Non-capturing Group
Non-capturing Group
    Any character in "0-9"
    Any non-digit
    + (one or more times) (non-greedy)
    @mydomain.com
End Capture
End Capture

]]> Tue, 30 Nov 2004 14:56:00 +0000 https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=4652&PID=4656&title=reject-emails-starting-with-numbers#4656 <![CDATA[Reject emails starting with numbers : Close but not quite. Yes it blocks...]]> https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=4652&PID=4655&title=reject-emails-starting-with-numbers#4655 Author: CyberBob
Subject: 4652
Posted: 30 November 2004 at 2:35pm

Close but not quite.

Yes it blocks any email with a leading number but it also blocks any email with a number in it??

Example:

Bob@mydomain.com was ok

1bob@mydomain.com was blocked

bob1@mydomain.com was also blocked??

How do I fix that??

]]> Tue, 30 Nov 2004 14:35:00 +0000 https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=4652&PID=4655&title=reject-emails-starting-with-numbers#4655 <![CDATA[Reject emails starting with numbers : ((.*@mydomain\.com)) try this....]]> https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=4652&PID=4653&title=reject-emails-starting-with-numbers#4653 Author: keizersozay
Subject: 4652
Posted: 29 November 2004 at 2:00pm

(([0-9].*@mydomain\.com))

try this. I haven't tested it yet though.

]]> Mon, 29 Nov 2004 14:00:00 +0000 https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=4652&PID=4653&title=reject-emails-starting-with-numbers#4653 <![CDATA[Reject emails starting with numbers : Can someone help me with the Regex...]]> https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=4652&PID=4652&title=reject-emails-starting-with-numbers#4652 Author: CyberBob
Subject: 4652
Posted: 29 November 2004 at 12:39pm

Can someone help me with the Regex to reject any email that starts with a number or a number of numbers.

As we all know spammers make up emails and the filter is stopping them but now I'm getting a request to reject any email that starts with numbers on a certain domain.

In the "Reject To" list I tried:

[0-9]*@mydomain.com

but it started blocking everything and I see the star is doing that. How do I specify starting with numbers @ a domain.

Thanks in advance,

Bob

]]> Mon, 29 Nov 2004 12:39:00 +0000 https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=4652&PID=4652&title=reject-emails-starting-with-numbers#4652