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<ilbargal@gmail.com>: host gmail-smtp-in.l.google.com[64.233.167.27] said:
    552-5.7.0 This message was blocked because its content presents a potential
    552-5.7.0 security issue. Please visit 552-5.7.0
    https://support.google.com/mail/answer/6590 to review our message 552 5.7.0
    content and attachment content guidelines. o5si14656234wiv.71 - gsmtp (in
    reply to end of DATA command)

<zzvika@gmail.com>: host gmail-smtp-in.l.google.com[64.233.167.27] said:
    552-5.7.0 This message was blocked because its content presents a potential
    552-5.7.0 security issue. Please visit 552-5.7.0
    https://support.google.com/mail/answer/6590 to review our message 552 5.7.0
    content and attachment content guidelines. o5si14656234wiv.71 - gsmtp (in
    reply to end of DATA command)