error when sending to gmail addresses

[irene1978]

I hope you can help me, I can't send emails to gmail addresses, I only receive, has this ever happened to you?
Thank you

[TomcatMJ]

Sound more like a Mailserverissue than a Roundcube issue..if you´re the Mailserveradmin you should check your Servers opendmarc/opendkim/SPF-Record Settings and the PTR-record Settings for your Mailserver(s)... https://mxtoolbox.com/ might help by this tasks to get an external View to the usability of theese settings;-)

Greetz from Cologne/Germany,
 Tom