Avoid datetime overflow, cache deb for a year instead of 300k years

CHANGELOG.md

@@ -14,9 +14,6 @@
 - Reconfigure Dovecot imap-login service to high-performance mode
   ([#578](https://github.com/chatmail/relay/pull/578))
 
-- Set timezone to improve dovecot performance
-  ([#584](https://github.com/chatmail/relay/pull/584))
-
 - Increase nginx connection limits
   ([#576](https://github.com/chatmail/relay/pull/576))
 

README.md

@@ -541,6 +541,3 @@ Here are some related projects that you may be interested in:
   progress](https://github.com/mjl-/mox/issues/251) to modify it to support all
   of the features and configuration settings required to operate as a chatmail
   relay.
-- [Maddy-Chatmail](https://github.com/sadraiiali/maddy_chatmail): a plugin for the
-  [Maddy email server](https://maddy.email/) which aims to implement the
-  chatmail relay features and configuration options.

cmdeploy/src/cmdeploy/__init__.py

@@ -321,14 +321,14 @@ def _configure_postfix(config: Config, debug: bool = False) -> bool:
 def _install_dovecot_package(package: str, arch: str):
     arch = "amd64" if arch == "x86_64" else arch
     arch = "arm64" if arch == "aarch64" else arch
-    url = f"https://download.delta.chat/dovecot/staging-drop-libicu/dovecot-{package}_2.3.21%2Bdfsg1-3_{arch}.deb"
+    url = f"https://download.delta.chat/dovecot/dovecot-{package}_2.3.21%2Bdfsg1-3_{arch}.deb"
     deb_filename = "/root/" + url.split("/")[-1]
 
     match (package, arch):
         case ("core", "amd64"):
-            sha256 = "dd060706f52a306fa863d874717210b9fe10536c824afe1790eec247ded5b27d"
+            sha256 = "43f593332e22ac7701c62d58b575d2ca409e0f64857a2803be886c22860f5587"
         case ("core", "arm64"):
-            sha256 = "e7548e8a82929722e973629ecc40fcfa886894cef3db88f23535149e7f730dc9"
+            sha256 = "4d21eba1a83f51c100f08f2e49f0c9f8f52f721ebc34f75018e043306da993a7"
         case ("imapd", "amd64"):
             sha256 = "8d8dc6fc00bbb6cdb25d345844f41ce2f1c53f764b79a838eb2a03103eebfa86"
         case ("imapd", "arm64"):
@@ -346,7 +346,7 @@ def _install_dovecot_package(package: str, arch: str):
         src=url,
         dest=deb_filename,
         sha256sum=sha256,
-        cache_time=60 * 60 * 24 * 365 * 10,  # never redownload the package
+        cache_time=60 * 60 * 24 * 365,  # cache the .deb for a year,
     )
 
     apt.deb(name=f"Install dovecot-{package}", src=deb_filename)
@@ -410,13 +410,6 @@ def _configure_dovecot(config: Config, debug: bool = False) -> bool:
             persist=True,
         )
 
-    timezone_env = files.line(
-        name="Set TZ environment variable",
-        path="/etc/environment",
-        line="TZ=:/etc/localtime",
-    )
-    need_restart |= timezone_env.changed
-
     return need_restart
 
 
@@ -716,10 +709,9 @@ def deploy_chatmail(config_path: Path, disable_mail: bool) -> None:
         packages="postfix",
     )
 
-    if not "dovecot.service" in host.get_fact(SystemdEnabled):
-        _install_dovecot_package("core", host.get_fact(facts.server.Arch))
-        _install_dovecot_package("imapd", host.get_fact(facts.server.Arch))
-        _install_dovecot_package("lmtpd", host.get_fact(facts.server.Arch))
+    _install_dovecot_package("core", host.get_fact(facts.server.Arch))
+    _install_dovecot_package("imapd", host.get_fact(facts.server.Arch))
+    _install_dovecot_package("lmtpd", host.get_fact(facts.server.Arch))
 
     apt.packages(
         name="Install nginx",

cmdeploy/src/cmdeploy/tests/online/test_1_basic.py

@@ -65,14 +65,6 @@ class TestSSHExecutor:
         assert (now - since_date).total_seconds() < 60 * 60 * 51
 
 
-def test_timezone_env(remote):
-    for line in remote.iter_output("env"):
-        print(line)
-        if line == "tz=:/etc/localtime":
-            return True
-    pytest.fail("TZ is not set")
-
-
 def test_remote(remote, imap_or_smtp):
     lineproducer = remote.iter_output(imap_or_smtp.logcmd)
     imap_or_smtp.connect()