OpenDkim Plugin RSA Key

I have some problem with gmail, practically every mail sent from the server using opendkim / spf in gitmaster imscp version is landing in spam folder.
I have searched the web for info and I have found the following,

Quote

Messages with DKIM signatures use a key to sign messages. Messages signed with short keys can be easily spoofed (see http://www.kb.cert.org/vuls/id/268267), so a message signed with a short key is no longer an indication that the message is properly authenticated. To best protect our users, Gmail will begin treating emails signed with less than 1024-bit keys as unsigned, starting in January 2013. We highly recommend that all senders using short keys switch to RSA keys that are at least 1024-bits long.

Source

The question is, does the opendkim plugin generate 1024 bits long RSA key?

Thank you for the answer.
[hr]
According to this,

Quote

DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; ....

I guess is a 256 bit key. Too weak for today's standards. I guess this is the reason that gmail treat those email as spam.

Is there a way to make it 1024 bit long?

Thanks for the answer. Last night I did some digging on the web and, indeed, the problem is not with the dkim or spf. Also the source of email says pass on those two,

Quote

spf=pass (google.com: domain of [email protected] designates 94.x.x.x as permitted sender) [email protected];
dkim=pass [email protected]

It must be something else.

The hostname and reverse IP is OK, and to be sure, the domain that I use is the main domanin from where the e-mails are sent. There must be something else...

A bit offtopic, there is a problem with the domain.tld/webmail redirect in the gitmaster version of 12 ian 2014.

So, is not a bug, it's a feature.