Why can I not send email?
Knowledge Base > FAQ's > Why can I not send email?
By Jeroen van Meeuwen on September 16, 2017

Please verify your account is not suspended. Individual users can verify their account status using the Kolab Now dashboard. Users of group manager accounts (custom domains) will need to contact their account administrator.

Kolab Now uses various anti-spam measures that block consumer Internet lines and server systems with bad reputations from submitting email to Kolab Now customers. These restrictions are applied on the inbound SMTP servers used by third parties to deliver email messages to our users, but not the SMTP servers our users use to submit email messages.

You may have used the wrong configuration for your client application. Please ensure that you are using the following settings for your client:

SMTP Settings with STARTTLS

Setting NameValue
Server Addresssmtp.kolabnow.com
Port Number587
SSL/TLS (aka. Encryption or Security)STARTTLS
AuthenticationAutomatic or Normal Password
UsernameYour Primary Email Address

SMTP Settings with implicit TLS

Setting NameValue
Server Addresssmtp.kolabnow.com
Port Number465
SSL/TLS (aka. Encryption or Security)SSL/TLS
AuthenticationAutomatic or Normal Password
UsernameYour Primary Email Address

Please note, that you should authenticate with your primary email address and the password for your account, but you have to connect to the server: smtp.kolabnow.com – even when your primary email address is not @kolabnow.com, but e.g. @myprivatedomain.org.

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