Hello!We are maintaining a couple mail hosts (>100). It's fine, cause they generate low e-mail traffic. Now we got some new domains, and we belive the stress will be excessive, not just bots, but i fear hackers, ddos, etc (but the ham would be still low). To prevent risking the 100 other domains, we bought a new server, different hostname, different ip. I pulled up postfix on that one too, only for relaying those domains, with a simple caching recipient address verification. It works fine, except if someone tries to send to an address which doesn't exist, it will expose the real mail server's name in the error message which i don't want to.
Is there a way to change the address verification failed message?Well i tought i could list the valid users in a table too (instead of address verification), but since email creation happens with a webadmin tool directly to the (cyrus) IMAP server, and existence checked via lmtp + address verification, i would need to write a syncronization code, which i would like to avoid.
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