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Dylan Davison
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Joined: 10 November 2003
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Posts: 262
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| Posted: 07 February 2006 at 11:05am | IP Logged
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I discovered some things about the webmail pro system that weren't obvious to me at first, so I thought I would share and Alex can correct me if I'm wrong.
When trying to determine if a message has been read or not, you need to get the message_id values from the webmail database, and compare it against the pop3 getmessageUID results returned from your mail server.
The mistake I made was using the wm_messages table message_id field to compare against this value. This works if you have the "delete messages from server" value turned on like I did in testing. But if users are going to be leaving a copy of mail on the server, then you want to use the message_id value from the wm_reads table because it keeps message IDs there even after they have been delete from the webmail system!
The database design is a bit unconventional in the sense that it stores message ids twice. I assume there must have been a major performance benefit to denormalizing this design in that way.
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Dylan Davison
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| Posted: 07 February 2006 at 11:07am | IP Logged
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Also, there seem to be no enforced table relationships, so if you are manually editing the db, make sure not to strand records!
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Alex
AfterLogic Support
Joined: 19 November 2003
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Posts: 2206
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| Posted: 08 February 2006 at 8:11am | IP Logged
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wm_reads table reflects the state of the mailbox on the mail server.
wm_messages reflects the state of the mailbox in the WebMail Pro database.
UIDs in both tables are not duplicated since you may have different mails in WebMail Pro database and on the mail server.
Actually, having UIDs in wm_reads improves performance of getting new mail since wm_reads is usually much less than wm_messages. Thus, searching wm_reads takes much less time than searching wm_messages.
Regards,
Alex
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Dylan Davison
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Joined: 10 November 2003
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| Posted: 08 February 2006 at 10:03am | IP Logged
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Thanks Alex.
Also, I was wondering about something else to do with this.
If a user has set their webmail to leave a copy of messages on the server, and then later they set it to delete messages from the server, will it only delete new messages that are received from the server? or will it actually remove all messages, both new and old from the server the next time it checks mail?
If it does not delete previously downloaded messages, then is there a way through webmail to remove those messages from the mail server via webmail? or would a 3rd party mail client be needed?
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Alex
AfterLogic Support
Joined: 19 November 2003
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Posts: 2206
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| Posted: 08 February 2006 at 12:06pm | IP Logged
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If they initially set "delete messages from the server" checkbox on, collect some mails, and then set this checkbox off, that mails will not get deleted from the server. Only new messages will get deleted.
However, it's easy to delete them from the server:
- tick "delete message from server when it's deleted from trash" checkbox
- delete that mails
- go to Trash and click Empty Trash
Mails will get deleted from WebMail db and from the mail server.
However, if you wish to delete them from the mail server but leave them intact in WebMail Pro database, you have to use another mail client which provides direct access to the mailbox (such as WebMail Lite).
Regards,
Alex
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EasyConnect
Newbie
Joined: 08 November 2005
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Posts: 5
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| Posted: 13 April 2006 at 7:21am | IP Logged
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Hi Alex,
I was searching for wm_reads on the forum and found this discussion.
My problem is that I now have 1.2 million records in wm_reads and I wonder how to reduce this.
wm_reads should be a mirror of whats on the mail-server, but we have defined rules for deleting mails on the server.
When a mail is deleted on the server this is not reflected in the wm_reads table.
Does there exist a routine so we can 'syncronize' wm_reads? - or what would you recommend?
Regards
Erik Borgen
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EasyConnect
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| Posted: 13 April 2006 at 8:24am | IP Logged
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Hi alex,
Addition to my previous question:
There are a lot of duplicates in wm_reads
If I eliminate duplicates on user_id, messsage_id, I only get 4936 records (compared to a total of 1.2 million).
So my next question: why do I have duplicates?
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Alex
AfterLogic Support
Joined: 19 November 2003
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Posts: 2206
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| Posted: 13 April 2006 at 11:50am | IP Logged
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Thank you for the bug report. We're working on it now and we will send you the update along with the corresponding instructions (describing how to clean up your database) via e-mail as soon as possible (approximately - tomorrow). We're sorry for inconvenience.
Regards,
Alex
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Alex
AfterLogic Support
Joined: 19 November 2003
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| Posted: 14 April 2006 at 6:33am | IP Logged
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Thank you for the bug report.
This bug has been fixed in MailBee WebMail Pro v3.3. We have already mailed you how to download and install the new version of MailBee WebMail Pro.
Regards,
Alex
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