how to increase the allowed size of the email attachments

Hi All

I used this tutorial : The Perfect Server - CentOS 5.4 x86_64 [ISPConfig 3] and want to increase the size.

I tried including this options:

mailbox_size_limit = 2048000000
message_size_limit = 20480000

and restarted postfix but still the changes doesn't take any effects.

Can somebody help me out

 

What's in your mail log when mails with big attachments get rejected?

 

here is the mail log,i tried sending a file bigger than 2MB

Jan 12 16:13:44 mailx postfix/smtpd[10245]: connect from unknown[124.231.12.1]
Jan 12 16:13:55 mailx postfix/smtpd[10245]: warning: 173.10.168.192.list.dsbl.org: RBL lookup error: Host or domain name not found. Name service error for name=173.10.168.192.list.dsbl.org type=A: Host not found, try again
Jan 12 16:14:10 mailx postfix/smtpd[10245]: warning: 173.10.168.192.sbl-xbl.spamhaus.org: RBL lookup error: Host or domain name not found. Name service error for name=173.10.168.192.sbl-xbl.spamhaus.org type=A: Host not found, try again
Jan 12 16:14:12 mailx postfix/smtpd[10245]: 5335048077: client=unknown[124.231.12.1]
Jan 12 16:14:12 mailx postfix/cleanup[10289]: 5335048077: message-id=<001e01ca9391$2f3390d0$ad0aa8c0@WIZZIT>
Jan 12 16:14:20 mailx postfix/smtpd[10245]: warning: 5335048077: queue file size limit exceeded
Jan 12 16:14:22 mailx postfix/smtpd[10245]: disconnect from unknown[124.231.12.1]

 

Please check if your server got blacklisted: http://mxtoolbox.com/blacklists.aspx

 

I'm busy on the process of registering the Domain and they asked for and i'm not sure what to provide.This is the question but don't know exactly what to supply.

Can you so long provide me with the A (web) and MX (mail) records if needed?

mail.rqthabang.com is my hostname