https://bugs.winehq.org/show_bug.cgi?id=45151
Kyle Auble kyle.auble@zoho.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Severity|normal |major
--- Comment #3 from Kyle Auble kyle.auble@zoho.com --- I have enough info for one last update, but I don't think I can add anything else beyond this point. I did go ahead and up the priority for this report. After thinking about it a bit more, I realized this bug potentially leaves the mailing list open to DoS attacks.
After the most recent blow-up (on May 10th), I found out that Zoho had blocked outgoing mail service on my account. I was able to get my account unblocked, but they weren't able to give me any debug information or transmission logs. All they said was that my recent activity triggered an anti-abuse filter so they lifted the block once I explained everything to them. Just to be safe, I'll be submitting patches as attachments through Gmail from here on out though.
According to their website, a burst of enough emails or possibly a data limit can cause a block. The block didn't start after the SNAFU with the 7 patch series though. The other dysfunctional patch was a larger binary one (~3.5M), but that didn't close down my SMTP service until after it reappeared on the patch queue Wednesday. Plus the overall message size isn't larger than, say, a photo I'd email to family. The one other possibility they mention is that if they get enough repeated bounces, they'll also lockdown the account.
I also finally tracked down some reports of the same problem, with multiple copies of a message flooding an SMTP server, on various forums. It's apparently not very common, but every discussion I found converged on a diagnosis of an email loop, possibly between the mail queue and the spam filter within the receiving server.