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Email: Retry after weird microsoft failure

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This commit is contained in:
Raphael Michel
2023-12-05 17:20:35 +01:00
parent 6fc76d4122
commit 062395dac1
1 changed files with 5 additions and 2 deletions
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7
src/pretix/base/services/mail.py
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@@ -573,8 +573,11 @@ def mail_send_task(self, *args, to: List[str], subject: str, body: str, html: st
except smtplib.SMTPRecipientsRefused as e:
smtp_codes = [a[0] for a in e.recipients.values()]
if not any(c >= 500 for c in smtp_codes):
# Not a permanent failure (mailbox full, service unavailable), retry later, but with large intervals
if not any(c >= 500 for c in smtp_codes) or any(b'Message is too large' in a[1] for a in e.recipients.values()):
# This is not a permanent failure (mailbox full, service unavailable), retry later, but with large
# intervals. One would think that "Message is too lage" is a permanent failure, but apparently it is not.
# We have documented cases of emails to Microsoft returning the error occasionally and then later
# allowing the very same email.
try:
self.retry(max_retries=5, countdown=[60, 300, 600, 1200, 1800, 1800][self.request.retries])
except MaxRetriesExceededError: