We Can NOT send mails with 1 Mb or higher attachments to both locally and external domains ( Both in Ajax and HTML modes )
No issue for sending small atatchments like 64 KB in size.
We can send emails without attachments. no problem at all.
Below is my setup ( Multi Server setup )
My setup is 2 MTAs and 1 mailbox server.
In MTA1 , primary ldap and nginx are runnig ( 4 GB Ram )
In MTA2 , Ldap replica and nginx are running ( 4 GB Ram )
one mailbox server ( 16 GB ram )
Do I need performence tunning ( like java heap type)
2 piranha load balancers with a virtuail ip. ( end users connect to this virtual ip )
We use Zimbra 7.2 64 bit on RHEL 6.2 64 bit
Dns server (bind) is runnig on all 3 Servers. so 127.0.0.1 is set as in /etc/resolve.conf file in all 3 servers. ( In addition to that, this is a Split domain setup with MS exchange server)
We incresed attachement size limits too with the following commands on both MTA s.
su - zimbra
zmprov mcf zimbraMtaMaxMessageSize 25000000
zmprov mcf zimbraFileUploadMaxSize 25000000
What could be the problem?
We cant NOT send mails with 1Mb or higher attachments from the mailbox server as well as clients PCs. ( all use webmail - port 80 )
no luck at all
Hope to hear from you....