I should have been clearer. I have been getting complaints from my sales folks that when they send emails to people who use gmail (either a gmail account or google apps) that they recipient is reporting that the email is ending up in the Spam folder. So, I tested this myself, sending an email from alex@corp.nac.net<mailto:alex@corp.nac.net> to rubenstein45@gmail.com<mailto:rubenstein45@gmail.com> [cid:image001.png@01D046AD.3B2FA890] This is curious to me, since @corp.nac.net is a small exchange implementation with only about 50 users behind it, and there is no question that there is no spamming going on from here. So, it’s not a question of adding a filter or not using gmail; it is not me who is using gmail in this problem. From: Josh Luthman [mailto:josh@imaginenetworksllc.com] Sent: Thursday, February 12, 2015 9:32 AM To: Alex Rubenstein Cc: NANOG list Subject: Re: gmail spam help Create a filter. Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Feb 12, 2015 8:11 AM, "Alex Rubenstein" <alex@corp.nac.net<mailto:alex@corp.nac.net>> wrote: Is there anyone on-list that can help me with a world -> gmail email issue, where email is being considering spam by gmail erroneously? Thanks.