can't send email- please help

[office@mash.org.il]

for the last days i unable to send mail from my pulook on mailenable acount (all other account work prefect)- i recived mail - but can't send and get tho following messege:

Task 'office@mash.org.il - Sending' reported error (0x80042109) : 'Outlook cannot connect to your outgoing (SMTP) e-mail server. If you continue to receive this message, contact your server administrator or Internet service provider (ISP).'

thill now stmp: 25 (outgoing mail server): mail.mash.org.il,

please help!
thanks
orna

[kather]

try port 587voor smtp; some internet providers block port 25
also check if in your settings (outlook) authorization is enable for sending mail

[MailEnable]

Could also try turning on troubleshooting logging and attempting to send an e-mail. If you review the troubleshooting log there should be an entry at the bottom explaining why. I suggest searching the log for the host name you specified as the outbound mail host. It would also be advisable to check the windows event log.