Spamming warning

Hi,

Asterisk sends me every 30-35 seconds

Any explanation of this warning?
Thanks

In what sense is this unsolicited commercial email? Your subject totally fails to summarise the real problem.

There is a SIP protocol error in the From line (or asserted ID, etc., one). e.g.

From: "John Doe j.doe@example.com; tag=1234567

when it should be:

From: “John Doe” j.doe@example.com; tag=1234567

or:

From: John Doe j.doe@example.com; tag=1234567

Fix whatever is sending broken SIP.