Gmail id restriction to register here!?!

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Gmail id restriction to register here!?!

Postby idaw » Thu Jun 26, 2014 6:50 am

When registering for this forum, I entered my usual email address, and received the error message :

Gmail addresses may not contain any periods to the left of the '@' symbol. Please re-type the email address without any periods. i.e., '' is OK, '' is not.

My email address is in the form of

Luckly I have another gmail id I use for software development project, which does not have periods in the name...

Is this just a restriction of phpBB ? and why Gmail? - my work email address (with major corporations) have always been in the form

Regards, Ian
Posts: 6
Joined: Thu Jun 26, 2014 1:17 am

Re: Gmail id restriction to register here!?!

Postby cbaker_admin » Thu Jun 26, 2014 1:55 pm

Gmail ignores periods in their email addresses, but phpBB does not. This is a trick that spammers employ to re-use a valid gmail address over and over again.

For instance, sending an email to the address "" will get to the recipient even if you were to use "". The spammers know this. So if "" gets blacklisted, they can simply change it to "" (which may not yet be blacklisted). Upper/lower case letters do not matter either (that goes for all email addresses, even non-gmail ones).

You could have probably used the format "" to register on this forum.

You can read more about this on this blog post.
Site Admin
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Location: Glendale, AZ USA

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