Icant transfer files with spark and other jabber clients, like pidgin or psi

Icant transfer files with spark and other jabber clients, like pidgin or psi, iam using spark 2.5.7 and psi 10 and pidgin 2.2.0, anybosy knows how to solve this problem? i can get files from psi and pidgin in spark but i cant send to them.

Thanks, and sorry about my english

Iwill wait for your answer

u had tried with Pandion , but with the same issue i cant tranfer files, any idea?

ok, i had tried with two sparks, so now i can transfer from one spark1 to the spark2 but i cant transfer files from spark2 to spark1, i dont know what the problem, in the openfire logs say nothing about it, please anybody can help me?

So I have the same problem. I am my own running openfire server and we have been able to transfer readily both ways between a spark client behind firewall (where openfire is runnign) and a spark client on wan side. However, when the wan user switched to pidgin everything was fine except file transfers no longer worked. wan(pidgin) -> lan(spark) nor lan(spark) -> wan(pidgin) worked. I haven’t figured it out yet either.