Markab IP Blacklisted

[exie 1]

Logged onto Markab, Czech Republic.
Tried to send mail from Outlook 2010 (Windows 10 Enterprise) but mail was bounced as IP was blacklisted.
Checked with SORBS - See screenshot.
Is it possible to clear this blacklisted IP?
regards
Exie

[OpenSourcerer 1435]

Question is, what triggered the addition? Even if you unlist it now, chances are some incompetent (or even malicious) user will get it listed again. Generally, using another client or another provider will do. I can faintly recall one or two threads about Outlook or Office 365 doing that.

[arteryshelby 25]

Mybe your outlook tries to send the email directly instead of using a relay SMTP server? Most dynamic user IPs are listed in sorbs and spamhaus and so on.. Not really a problem unless youre trying to directly send via SMTP from this iP (which you normally dont want)