ejabberd doesn't support 0357 [0]. Presumably because their 'pro' version has mobile support.

MongooseIM doesn't support it either, although there is talk of it being implemented [1]

To be fair though, it was only accepted on the 18th March 2015.

[0] - https://www.ejabberd.im/protocols [1] - https://github.com/esl/MongooseIM/issues/405

Hehe, over a week of time and it's still not there!

FWIW, somebody is working on an ejabberd module [1], and there's some discussion [2] on the <standards@xmpp.org> mailing list.

(And ejabberd's community edition supports the XEPs that are relevant to mobile clients too, BTW.)

[1] - https://github.com/royneary/mod_push [2] - http://mail.jabber.org/pipermail/standards/2015-March/thread...