You are trying to send us an email but it keeps bouncing back with an error?
The most likely cause is that your email server has been added to a blacklist for sending spam.
We use the following black lists:
The returned message should read something like the following:
Reason: 5.7.1 Service Unavailable;
Client host [xxx.xxx.xxx.xxx] blocked using dnsbl-1.uceprotect.net;
IP xxx.xxx.xxx.xxx is UCEPROTECT-Level 1 listed.
In this case you need to pass the xxx.xxx.xxx.xxx entry on to us so we can add it into our “acceptable server” list to bypass the blacklist checks.
However, if xxx.xxx.xxx.xxx is your own server you should check the reason why it has been blacklisted and correct the situation.
The max message size is:12600000 bytes (12MB).