Cron error periodically

[hesker]

Just got it again, slightly over an hour after the previous one.

[Klemen]

Both POP3 and IMAP use the same code to parse received email so no matter how they are received they all get processed (passed to) the same functions.

Please turn Debug mode ON in Hesk admin panel > Settings > Help desk tab > look under Features and we'll see if we get a better error message.

[hesker]

Finally had a chance to look into this, but debug mode revealed nothing:

Connected to the IMAP server "{domain.com:993/imap/ssl/novalidate-cert}".
No unread messages found.
Disconnected from the IMAP server.

Now what?

[Klemen]

That's a normal response. I'd keep the debug mode active and see what it says when an error occurs.

[hesker]

As far as I can tell this IS the debug error. This is what I keep being sent, multiple times per day every day now. If I disable debug mode, I just get "An error occurred". If I enable debug, I get a seemingly normal response. I'm at a loss.

[Klemen]

Yeh, that's how Cron works - anything returned by the script will be emailed to you.

Unfortunately, there's no way around it - you need to keep debug mode active and receive an email every time the Cron job runs. When a connection error does occur, the error message should be different (and hopefully help us find the issue)?

[hesker]

i'll leave it running a few more days but so far, nothing but "correct" responses with debug enabled.

[hesker]

Still nothing but normal responses with debug enabled. I have no reason to think that's going to change.

[hesker]

I'm reasonably sure this error messages is a false positive. I only get it if debug is disabled, and there is no actual problem as the fetching works perfectly fine (both pop and imap).

[Klemen]

Rather than a false one, it's probably a temporary one. On the next run, the mail server connection works fine so emails get fetched.

[hesker]

But then why, when debug is enabled, do I never get any errors, not even once?

[Klemen]

Murphy ?

Nothing changes in the debug mode except that steps Hesk performs and PHP error messages are output, instead of silenced.

[hesker]

Yeah that's what I mean by some sort of false positive. Something, maybe specific to this host (SiteGround), is triggering the error messages frequently but not on every run, only when debug is disabled. But since I have no idea what to point them to, they just point to the script and say "talk to the author".

[hesker]

Now that debug is turned off again, I got the error once more.

<h2>An error occured.</h2><p>For details turn <b>Debug mode</b> ON in settings and run this script again.</p>

[hesker]

Wow I actually got a different error for once...

<pre>Can not authenticate to IMAP server: [CLOSED] IMAP connection broken (authenticate)</pre>