feat: Extend IMAP METADATA to have a unixtimestamp key

chatmaild/pyproject.toml

@@ -10,6 +10,7 @@ dependencies = [
   "filelock",
   "requests",
   "crypt-r >= 3.13.1 ; python_version >= '3.11'",
+  "domain-validator",
 ]
 
 [tool.setuptools]

chatmaild/src/chatmaild/config.py

@@ -2,6 +2,7 @@ import ipaddress
 from pathlib import Path
 
 import iniconfig
+from domain_validator import DomainValidator
 
 from chatmaild.user import User
 
@@ -24,6 +25,7 @@ class Config:
             self.mail_domain = f"[{raw_domain}]"
             self.postfix_myhostname = ipaddress.IPv4Address(raw_domain).reverse_pointer
         else:
+            DomainValidator().validate_domain_re(raw_domain)
             self.ipv4_relay = None
             self.mail_domain = raw_domain
             self.postfix_myhostname = raw_domain

chatmaild/src/chatmaild/metadata.py

@@ -125,6 +125,8 @@ class MetadataDictProxy(DictProxy):
                         case "maxsmtprecipients":
                             # postfix default  (see "postconf smtpd_recipient_limit")
                             return "O1000\n"
+                        case "unixtimestamp":
+                            return f"O{int(time.time())}\n"
 
         logging.warning(f"lookup ignored: {parts!r}")
         return "N\n"

cmdeploy/src/cmdeploy/tests/plugin.py

@@ -10,11 +10,13 @@ from pathlib import Path
 
 import pytest
 from chatmaild.config import is_valid_ipv4, read_config
+from domain_validator import DomainValidator
 
 
 def format_mail_domain(raw_domain: str) -> str:
     if is_valid_ipv4(raw_domain):
         return f"[{raw_domain}]"
+    DomainValidator().validate_domain_re(raw_domain)
     return raw_domain