topic Does EE 4G block SMTP ports in Archived Posts https://community.ee.co.uk/t5/Archived-Posts/Does-EE-4G-block-SMTP-ports/m-p/1052013#M271675 <P>Im trying to setup Scan to Email from our printer but it will not send and gives an authentication error. Ive checked the details on another machine offsite and it works fine. We are using a TP-Link 4G Router with EE Sim card.</P> Wed, 19 May 2021 13:07:49 GMT mcoops1 2021-05-19T13:07:49Z Does EE 4G block SMTP ports https://community.ee.co.uk/t5/Archived-Posts/Does-EE-4G-block-SMTP-ports/m-p/1052013#M271675 <P>Im trying to setup Scan to Email from our printer but it will not send and gives an authentication error. Ive checked the details on another machine offsite and it works fine. We are using a TP-Link 4G Router with EE Sim card.</P> Wed, 19 May 2021 13:07:49 GMT https://community.ee.co.uk/t5/Archived-Posts/Does-EE-4G-block-SMTP-ports/m-p/1052013#M271675 mcoops1 2021-05-19T13:07:49Z Re: Does EE 4G block SMTP ports https://community.ee.co.uk/t5/Archived-Posts/Does-EE-4G-block-SMTP-ports/m-p/1052027#M271676 <P>No, EE blocks no outgoing ports.</P> Wed, 19 May 2021 13:55:59 GMT https://community.ee.co.uk/t5/Archived-Posts/Does-EE-4G-block-SMTP-ports/m-p/1052027#M271676 XRaySpeX 2021-05-19T13:55:59Z