I switched ISP for my Zimbra server and their MTA renames everyone's emails with my name (sender).
So I need to "buy" a SMTP service from a third party.
DynDNS offers 150 emails/day for 19.95$ a year but that is not enough. I need at least twice that amount of emails/day.
Of course, it has to be compatible with Zimbra. See this page for more infos:
Outgoing SMTP Authentication - Zimbra :: Wiki
Any suggestions ?
PS: I have another Linux server running postfix with another ISP, can I use it as a MTA ?