Hello, we want to use check_smtp to check an email delivery for an internal SMTP server. Several commands and responses were specified for this. Unfortunately, a timeout occurs. After checking the source code (Git), a response is obviously expected for each command. When transferring DATA with several lines (required), the timeout occurs due to missing response till closing the data transfer with ".".
Can this be fixed/worked around? Is there an alternative approach that could work around the problem? Commands HELO seele.com MAIL FROM:<ch...@seele.com> RCPT TO:<ja...@seele.com> DATA Subject: Testmail Jame From: <ch...@seele.com> To: <ja...@seele.com> Inhalt . Responses 250 250 250 354 null null null null 250 (null is not posible) Screenshot Command check_mk_active-smtp!'-e' '220' '-p' 25 '-4' '-C' 'HELO seele.com' '-C' 'MAIL FROM:<ch...@seele.com>' '-C' 'RCPT TO:<ja...@seele.com>' '-C' 'DATA' '-C' 'Subject: Testmail James' '-C' 'From: <ch...@seele.com>' '-C' 'To: <ja...@seele.com>' '-C' 'Inhalt' '-C' '.' '-R' '250' '-R' '250' '-R' '250' '-R' '354' '-R' 'null' '-R' 'null' '-R' 'null' '-R' 'null' '-R' '250' '-H' '$_HOSTADDRESS_4$' Can you please help us with this issue? Best Regards i.A. Daniel Fischer Teamleiter Softwareentwicklung Telefon:+49 821 2494 - 174 ( tel:+498212494174) Fax:+49 821 2494 - 930 ( tel:+498212494930) daniel.fisc...@seele.com www.seele.com seele GmbH, Gutenbergstraße 19, 86368 Gersthofen, Deutschland ( https://www.linkedin.com/company/seelegroup/) ( https://www.youtube.com/c/seelegroup) ( https://www.facebook.com/seele.group) ( https://twitter.com/seelegroup) ( https://www.instagram.com/seele_group/) Registered in HRB Augsburg No. 25584 Jurisdiction Augsburg Managing Director: Andreas Hafner Certified on DIN EN ISO 9001, DIN EN ISO 14001 and DIN EN ISO 50001 Datenschutzinformation ( https://seele.com/de/datenschutzinformation/)
