Exchange does not send -receive emails, very strange problem

I have SBs 2003 server that from yesterday stopped sending/receiving e-mails
I have tested SMTP connectivity and it is ok (via telnet), everything shows up in logs - but when I start outlook or webmail no new e-mails are available. Same thing with SMTP - the outlook sends e-mails and they show up in queues in SM but nothing is received.
There is MDBDATA folder growing very quickly with around 19000 files from today and yesterday but nothin seemingly is being copied to the edb database???
What can I do?
I have changed maximum database file to 50GB, it is 12(edb) +4GB(stm)
Laurence
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wawrzekAsked:
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wawrzekConnect With a Mentor Author Commented:
yes it is!
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ormerodrutterCommented:
Have you checked with your ISP to see if its the problem with their servers?
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wawrzekAuthor Commented:
Sorry I might have been bit chaotic.
The ISP/internet connection is OK.
The program files\exchsrvr\mdbdata is being filled with *.stf and dlv0xxxx.log files, over 20 000 now and growing
The log is full of 2055 (MSExchangeIS Mailbox Store), 985 (MSExchange Transport)  and 2049 events

When I send something from Outlook/webmail when logged on the server - SMTP logs show the connections etc and e-mail shows in queues, then is gone and never gets to the addressee.
Similarly when I send e-mails from outside the SMTP log registers connection, the e-mail gets in the system but never reaches the Inbox of actual e-mail. where it goes to - I have no idea.
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wawrzekAuthor Commented:
It is me again - not having heard from anybody I've rung MS support.
It turned out the problem was caused by SMTP - there were some corrupt files etc. and the Exchange was not able to use it even if it appeared up and running from outside. I was sent the file and it has reinstalled the SMTP in the way Exchange installs it.
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suppsawsCommented:
Hello wawrzek,

is everything working now?

Regards,

suppsaws
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