use fork context of multiprocessing module to start mailer

distribution/gentoo/mail-filter/pyquarantine-milter/pyquarantine-milter-9999.ebuild

@@ -2,7 +2,7 @@
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
-PYTHON_COMPAT=( python3_{11..13} )
+PYTHON_COMPAT=( python3_{13..14} )
 DISTUTILS_USE_PEP517=setuptools
 
 SCM=""

pyquarantine/__init__.py

@@ -27,7 +27,7 @@ __all__ = [
     "lists",
     "QuarantineMilter"]
 
-__version__ = "2.1.1"
+__version__ = "2.1.2"
 
 from pyquarantine import _runtime_patches
 

pyquarantine/mailer.py

@@ -13,13 +13,14 @@
 #
 
 import logging
+import multiprocessing as mp
 import smtplib
 
-from multiprocessing import Process, Queue
+from queue import Full as QueueFull
 
 
 logger = logging.getLogger(__name__)
-queue = Queue(maxsize=50)
+queue = mp.Queue(maxsize=50)
 process = None
 
 
@@ -71,7 +72,8 @@ def sendmail(smtp_host, smtp_port, qid, mailfrom, recipients, mail,
 
     # start mailprocess if it is not started yet
     if process is None:
-        process = Process(target=mailprocess)
+        ctx = mp.get_context('fork')
+        process = ctx.Process(target=mailprocess)
         process.daemon = True
         logger.debug("starting mailer process")
         process.start()
@@ -82,5 +84,5 @@ def sendmail(smtp_host, smtp_port, qid, mailfrom, recipients, mail,
                 (smtp_host, smtp_port, qid, mailfrom, recipient, mail,
                  emailtype),
                 timeout=30)
-        except Queue.Full:
+        except QueueFull:
             raise RuntimeError("email queue is full")

setup.py

@@ -33,5 +33,5 @@ setup(name = "pyquarantine",
         ]
     },
     install_requires = ["pymilter >= 1.5", "jsonschema", "netaddr", "beautifulsoup4[lxml]", "peewee"],
-    python_requires = ">=3.10"
+    python_requires = ">=3.13"
 )